Vendoring deprecated composer libs

502 files changed, 15170 insertions, 0 deletions

diff --git a/libs/jsonrpc/LICENSE b/libs/jsonrpc/LICENSE
new file mode 100644
index 00000000..6a362bc1
--- /dev/null
+++ b/libs/jsonrpc/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Frederic Guillot
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/libs/jsonrpc/README.markdown b/libs/jsonrpc/README.markdown
new file mode 100644
index 00000000..91891a21
--- /dev/null
+++ b/libs/jsonrpc/README.markdown
@@ -0,0 +1,412 @@
+JsonRPC PHP Client and Server
+=============================
+
+A simple Json-RPC client/server that just works.
+
+Features
+--------
+
+- JSON-RPC 2.0 only
+- The server support batch requests and notifications
+- Authentication and IP based client restrictions
+- Custom Middleware
+- Fully unit tested
+- Requirements: PHP >= 5.3.4
+- License: MIT
+
+Author
+------
+
+Frédéric Guillot
+
+Installation with Composer
+--------------------------
+
+```bash
+composer require fguillot/json-rpc @stable
+```
+
+Examples
+--------
+
+### Server
+
+Callback binding:
+
+```php
+<?php
+
+use JsonRPC\Server;
+
+$server = new Server();
+$server->getProcedureHandler()
+    ->withCallback('addition', function ($a, $b) {
+        return $a + $b;
+    })
+    ->withCallback('random', function ($start, $end) {
+        return mt_rand($start, $end);
+    })
+;
+
+echo $server->execute();
+```
+
+Callback binding from array:
+
+```php
+<?php
+
+use JsonRPC\Server;
+
+$callbacks = array(
+    'getA' => function() { return 'A'; },
+    'getB' => function() { return 'B'; },
+    'getC' => function() { return 'C'; }
+);
+
+$server = new Server();
+$server->getProcedureHandler()->withCallbackArray($callbacks);
+
+echo $server->execute();
+```
+
+Class/Method binding:
+
+```php
+<?php
+
+use JsonRPC\Server;
+
+class Api
+{
+    public function doSomething($arg1, $arg2 = 3)
+    {
+        return $arg1 + $arg2;
+    }
+}
+
+$server = new Server();
+$procedureHandler = $server->getProcedureHandler();
+
+// Bind the method Api::doSomething() to the procedure myProcedure
+$procedureHandler->withClassAndMethod('myProcedure', 'Api', 'doSomething');
+
+// Use a class instance instead of the class name
+$procedureHandler->withClassAndMethod('mySecondProcedure', new Api, 'doSomething');
+
+// The procedure and the method are the same
+$procedureHandler->withClassAndMethod('doSomething', 'Api');
+
+// Attach the class, the client will be able to call directly Api::doSomething()
+$procedureHandler->withObject(new Api());
+
+echo $server->execute();
+```
+
+Class/Method binding from array:
+
+```php
+<?php
+
+use JsonRPC\Server;
+
+class MathApi
+{
+    public function addition($arg1, $arg2)
+    {
+        return $arg1 + $arg2;
+    }
+
+    public function subtraction($arg1, $arg2)
+    {
+        return $arg1 - $arg2;
+    }
+
+    public function multiplication($arg1, $arg2)
+    {
+        return $arg1 * $arg2;
+    }
+
+    public function division($arg1, $arg2)
+    {
+        return $arg1 / $arg2;
+    }
+}
+
+$callbacks = array(
+    'addition'       => array( 'MathApi', addition ),
+    'subtraction'    => array( 'MathApi', subtraction ),
+    'multiplication' => array( 'MathApi', multiplication ),
+    'division'       => array( 'MathApi', division )
+);
+
+$server = new Server();
+$server->getProcedureHandler()->withClassAndMethodArray($callbacks);
+
+echo $server->execute();
+```
+
+Server Middleware:
+
+Middleware might be used to authenticate and authorize the client.
+They are executed before each procedure.
+
+```php
+<?php
+
+use JsonRPC\Server;
+use JsonRPC\MiddlewareInterface;
+use JsonRPC\Exception\AuthenticationFailureException;
+
+class Api
+{
+    public function doSomething($arg1, $arg2 = 3)
+    {
+        return $arg1 + $arg2;
+    }
+}
+
+class MyMiddleware implements MiddlewareInterface
+{
+    public function execute($username, $password, $procedureName)
+    {
+        if ($username !== 'foobar') {
+            throw new AuthenticationFailureException('Wrong credentials!');
+        }
+    }
+}
+
+$server = new Server();
+$server->getMiddlewareHandler()->withMiddleware(new MyMiddleware());
+$server->getProcedureHandler()->withObject(new Api());
+echo $server->execute();
+```
+
+You can raise a `AuthenticationFailureException` when the API credentials are wrong or a `AccessDeniedException` when the user is not allowed to access to the procedure.
+
+### Client
+
+Example with positional parameters:
+
+```php
+<?php
+
+use JsonRPC\Client;
+
+$client = new Client('http://localhost/server.php');
+$result = $client->execute('addition', [3, 5]);
+```
+
+Example with named arguments:
+
+```php
+<?php
+
+use JsonRPC\Client;
+
+$client = new Client('http://localhost/server.php');
+$result = $client->execute('random', ['end' => 10, 'start' => 1]);
+```
+
+Arguments are called in the right order.
+
+Examples with the magic method `__call()`:
+
+```php
+<?php
+
+use JsonRPC\Client;
+
+$client = new Client('http://localhost/server.php');
+$result = $client->random(50, 100);
+```
+
+The example above use positional arguments for the request and this one use named arguments:
+
+```php
+$result = $client->random(['end' => 10, 'start' => 1]);
+```
+
+### Client batch requests
+
+Call several procedures in a single HTTP request:
+
+```php
+<?php
+
+use JsonRPC\Client;
+
+$client = new Client('http://localhost/server.php');
+
+$results = $client->batch()
+                  ->foo(['arg1' => 'bar'])
+                  ->random(1, 100)
+                  ->add(4, 3)
+                  ->execute('add', [2, 5])
+                  ->send();
+
+print_r($results);
+```
+
+All results are stored at the same position of the call.
+
+### Client exceptions
+
+Client exceptions are normally thrown when an error is returned by the server. You can change this behaviour by
+using the `$returnException` argument which causes exceptions to be returned. This can be extremely useful when
+executing the batch request. 
+
+- `BadFunctionCallException`: Procedure not found on the server
+- `InvalidArgumentException`: Wrong procedure arguments
+- `JsonRPC\Exception\AccessDeniedException`: Access denied
+- `JsonRPC\Exception\ConnectionFailureException`: Connection failure
+- `JsonRPC\Exception\ServerErrorException`: Internal server error
+
+### Enable client debugging
+
+You can enable the debug mode to see the JSON request and response:
+
+```php
+<?php
+
+use JsonRPC\Client;
+
+$client = new Client('http://localhost/server.php');
+$client->getHttpClient()->withDebug();
+```
+
+The debug output is sent to the PHP system logger.
+You can configure the log destination in your `php.ini`.
+
+Output example:
+
+```json
+==> Request:
+{
+    "jsonrpc": "2.0",
+    "method": "removeCategory",
+    "id": 486782327,
+    "params": [
+        1
+    ]
+}
+==> Response:
+{
+    "jsonrpc": "2.0",
+    "id": 486782327,
+    "result": true
+}
+```
+
+### IP based client restrictions
+
+The server can allow only some IP addresses:
+
+```php
+<?php
+
+use JsonRPC\Server;
+
+$server = new Server;
+
+// IP client restrictions
+$server->allowHosts(['192.168.0.1', '127.0.0.1']);
+
+[...]
+
+// Return the response to the client
+echo $server->execute();
+```
+
+If the client is blocked, you got a 403 Forbidden HTTP response.
+
+### HTTP Basic Authentication
+
+If you use HTTPS, you can allow client by using a username/password.
+
+```php
+<?php
+
+use JsonRPC\Server;
+
+$server = new Server;
+
+// List of users to allow
+$server->authentication(['user1' => 'password1', 'user2' => 'password2']);
+
+[...]
+
+// Return the response to the client
+echo $server->execute();
+```
+
+On the client, set credentials like that:
+
+```php
+<?php
+
+use JsonRPC\Client;
+
+$client = new Client('http://localhost/server.php');
+$client->getHttpClient()
+    ->withUsername('Foo')
+    ->withPassword('Bar');
+```
+
+If the authentication failed, the client throw a RuntimeException.
+
+Using an alternative authentication header:
+
+```php
+
+use JsonRPC\Server;
+
+$server = new Server();
+$server->setAuthenticationHeader('X-Authentication');
+$server->authentication(['myusername' => 'mypassword']);
+```
+
+The example above will use the HTTP header `X-Authentication` instead of the standard `Authorization: Basic [BASE64_CREDENTIALS]`.
+The username/password values need be encoded in base64: `base64_encode('username:password')`.
+
+### Local Exceptions
+
+By default, the server will relay all exceptions to the client.
+If you would like to relay only some of them, use the method `Server::withLocalException($exception)`:
+
+```php
+<?php
+
+use JsonRPC\Server;
+class MyException1 extends Exception {};
+class MyException2 extends Exception {};
+
+$server = new Server();
+
+// Exceptions that should NOT be relayed to the client, if they occurs
+$server
+    ->withLocalException('MyException1')
+    ->withLocalException('MyException2')
+;
+
+[...]
+
+echo $server->execute();
+```
+
+### Callback before client request
+
+You can use a callback to change the HTTP headers or the URL before to make the request to the server.
+
+Example:
+
+```php
+<?php
+
+$client = new Client();
+$client->getHttpClient()->withBeforeRequestCallback(function(HttpClient $client, $payload) {
+    $client->withHeaders(array('Content-Length: '.strlen($payload)));
+});
+
+$client->myProcedure(123);
+```
diff --git a/libs/jsonrpc/src/JsonRPC/Client.php b/libs/jsonrpc/src/JsonRPC/Client.php
new file mode 100644
index 00000000..73ab1342
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Client.php
@@ -0,0 +1,198 @@
+<?php
+
+namespace JsonRPC;
+
+use Exception;
+use JsonRPC\Request\RequestBuilder;
+use JsonRPC\Response\ResponseParser;
+
+/**
+ * JsonRPC client class
+ *
+ * @package JsonRPC
+ * @author  Frederic Guillot
+ */
+class Client
+{
+    /**
+     * If the only argument passed to a function is an array
+     * assume it contains named arguments
+     *
+     * @access private
+     * @var boolean
+     */
+    private $isNamedArguments = true;
+
+    /**
+     * Do not immediately throw an exception on error. Return it instead.
+     *
+     * @access public
+     * @var boolean
+     */
+    private $returnException = false;
+
+    /**
+     * True for a batch request
+     *
+     * @access private
+     * @var boolean
+     */
+    private $isBatch = false;
+
+    /**
+     * Batch payload
+     *
+     * @access private
+     * @var array
+     */
+    private $batch = array();
+
+    /**
+     * Http Client
+     *
+     * @access private
+     * @var HttpClient
+     */
+    private $httpClient;
+
+    /**
+     * Constructor
+     *
+     * @access public
+     * @param  string      $url               Server URL
+     * @param  bool        $returnException   Return exceptions
+     * @param  HttpClient  $httpClient        HTTP client object
+     */
+    public function __construct($url = '', $returnException = false, HttpClient $httpClient = null)
+    {
+        $this->httpClient = $httpClient ?: new HttpClient($url);
+        $this->returnException = $returnException;
+    }
+
+    /**
+     * Arguments passed are always positional
+     *
+     * @access public
+     * @return $this
+     */
+    public function withPositionalArguments()
+    {
+        $this->isNamedArguments = false;
+        return $this;
+    }
+
+    /**
+     * Get HTTP Client
+     *
+     * @access public
+     * @return HttpClient
+     */
+    public function getHttpClient()
+    {
+        return $this->httpClient;
+    }
+
+    /**
+     * Set username and password
+     *
+     * @access public
+     * @param  string $username
+     * @param  string $password
+     * @return $this
+     */
+    public function authentication($username, $password)
+    {
+        $this->httpClient
+            ->withUsername($username)
+            ->withPassword($password);
+
+        return $this;
+    }
+
+    /**
+     * Automatic mapping of procedures
+     *
+     * @access public
+     * @param  string   $method   Procedure name
+     * @param  array    $params   Procedure arguments
+     * @return mixed
+     */
+    public function __call($method, array $params)
+    {
+        if ($this->isNamedArguments && count($params) === 1 && is_array($params[0])) {
+            $params = $params[0];
+        }
+
+        return $this->execute($method, $params);
+    }
+
+    /**
+     * Start a batch request
+     *
+     * @access public
+     * @return Client
+     */
+    public function batch()
+    {
+        $this->isBatch = true;
+        $this->batch = array();
+        return $this;
+    }
+
+    /**
+     * Send a batch request
+     *
+     * @access public
+     * @return array
+     */
+    public function send()
+    {
+        $this->isBatch = false;
+        return $this->sendPayload('['.implode(', ', $this->batch).']');
+    }
+
+    /**
+     * Execute a procedure
+     *
+     * @access public
+     * @param  string      $procedure Procedure name
+     * @param  array       $params    Procedure arguments
+     * @param  array       $reqattrs
+     * @param  string|null $requestId Request Id
+     * @param  string[]    $headers   Headers for this request
+     * @return mixed
+     */
+    public function execute($procedure, array $params = array(), array $reqattrs = array(), $requestId = null, array $headers = array())
+    {
+        $payload = RequestBuilder::create()
+            ->withProcedure($procedure)
+            ->withParams($params)
+            ->withRequestAttributes($reqattrs)
+            ->withId($requestId)
+            ->build();
+
+        if ($this->isBatch) {
+            $this->batch[] = $payload;
+            return $this;
+        }
+
+        return $this->sendPayload($payload, $headers);
+    }
+
+    /**
+     * Send payload
+     *
+     * @access private
+     * @throws Exception
+     * @param  string   $payload
+     * @param  string[] $headers
+     * @return Exception|Client
+     */
+    private function sendPayload($payload, array $headers = array())
+    {
+        return ResponseParser::create()
+            ->withReturnException($this->returnException)
+            ->withPayload($this->httpClient->execute($payload, $headers))
+            ->parse();
+    }
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Exception/AccessDeniedException.php b/libs/jsonrpc/src/JsonRPC/Exception/AccessDeniedException.php
new file mode 100644
index 00000000..d1aabfbe
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Exception/AccessDeniedException.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace JsonRPC\Exception;
+
+/**
+ * Class AccessDeniedException
+ *
+ * @package JsonRPC\Exception
+ * @author  Frederic Guillot
+ */
+class AccessDeniedException extends RpcCallFailedException
+{
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Exception/AuthenticationFailureException.php b/libs/jsonrpc/src/JsonRPC/Exception/AuthenticationFailureException.php
new file mode 100644
index 00000000..770edeeb
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Exception/AuthenticationFailureException.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace JsonRPC\Exception;
+
+/**
+ * Class AuthenticationFailureException
+ *
+ * @package JsonRPC\Exception
+ * @author  Frederic Guillot
+ */
+class AuthenticationFailureException extends RpcCallFailedException
+{
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Exception/ConnectionFailureException.php b/libs/jsonrpc/src/JsonRPC/Exception/ConnectionFailureException.php
new file mode 100644
index 00000000..195f8910
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Exception/ConnectionFailureException.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace JsonRPC\Exception;
+
+/**
+ * Class ConnectionFailureException
+ *
+ * @package JsonRPC\Exception
+ * @author  Frederic Guillot
+ */
+class ConnectionFailureException extends RpcCallFailedException
+{
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Exception/InvalidJsonFormatException.php b/libs/jsonrpc/src/JsonRPC/Exception/InvalidJsonFormatException.php
new file mode 100644
index 00000000..294bc74c
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Exception/InvalidJsonFormatException.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace JsonRPC\Exception;
+
+/**
+ * Class InvalidJsonFormatException
+ *
+ * @package JsonRPC\Exception
+ * @author  Frederic Guillot
+ */
+class InvalidJsonFormatException extends RpcCallFailedException
+{
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Exception/InvalidJsonRpcFormatException.php b/libs/jsonrpc/src/JsonRPC/Exception/InvalidJsonRpcFormatException.php
new file mode 100644
index 00000000..2e3ff05b
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Exception/InvalidJsonRpcFormatException.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace JsonRPC\Exception;
+
+/**
+ * Class InvalidJsonRpcFormatException
+ *
+ * @package JsonRPC\Exception
+ * @author  Frederic Guillot
+ */
+class InvalidJsonRpcFormatException extends RpcCallFailedException
+{
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Exception/ResponseEncodingFailureException.php b/libs/jsonrpc/src/JsonRPC/Exception/ResponseEncodingFailureException.php
new file mode 100644
index 00000000..16f75910
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Exception/ResponseEncodingFailureException.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace JsonRPC\Exception;
+
+/**
+ * Class ResponseEncodingFailureException
+ *
+ * @package JsonRPC\Exception
+ * @author  Frederic Guillot
+ */
+class ResponseEncodingFailureException extends RpcCallFailedException
+{
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Exception/ResponseException.php b/libs/jsonrpc/src/JsonRPC/Exception/ResponseException.php
new file mode 100644
index 00000000..e97b4e6b
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Exception/ResponseException.php
@@ -0,0 +1,62 @@
+<?php
+
+namespace JsonRPC\Exception;
+
+use Exception;
+
+/**
+ * Class ResponseException
+ *
+ * @package JsonRPC\Exception
+ * @author  Frederic Guillot
+ */
+class ResponseException extends RpcCallFailedException
+{
+    /**
+     * A value that contains additional information about the error.
+     *
+     * @access protected
+     * @link http://www.jsonrpc.org/specification#error_object
+     * @var mixed
+     */
+    protected $data;
+
+    /**
+     * Constructor
+     *
+     * @access public
+     * @param string    $message  [optional] The Exception message to throw.
+     * @param int       $code     [optional] The Exception code.
+     * @param Exception $previous [optional] The previous exception used for the exception chaining. Since 5.3.0
+     * @param mixed     $data     [optional] A value that contains additional information about the error.
+     */
+    public function __construct($message = '', $code = 0, Exception $previous = null, $data = null)
+    {
+        parent::__construct($message, $code, $previous);
+        $this->setData($data);
+    }
+
+    /**
+     * Attach additional information
+     *
+     * @access public
+     * @param mixed $data [optional] A value that contains additional information about the error.
+     * @return \JsonRPC\Exception\ResponseException
+     */
+    public function setData($data = null)
+    {
+        $this->data = $data;
+        return $this;
+    }
+
+    /**
+     * Get additional information
+     *
+     * @access public
+     * @return mixed|null
+     */
+    public function getData()
+    {
+        return $this->data;
+    }
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Exception/RpcCallFailedException.php b/libs/jsonrpc/src/JsonRPC/Exception/RpcCallFailedException.php
new file mode 100644
index 00000000..b3fcd84e
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Exception/RpcCallFailedException.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace JsonRPC\Exception;
+
+use Exception;
+
+/**
+ * Class RpcCallFailedException
+ *
+ * @package JsonRPC\Exception
+ * @author  Frederic Guillot
+ */
+class RpcCallFailedException extends Exception
+{
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Exception/ServerErrorException.php b/libs/jsonrpc/src/JsonRPC/Exception/ServerErrorException.php
new file mode 100644
index 00000000..29031604
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Exception/ServerErrorException.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace JsonRPC\Exception;
+
+/**
+ * Class ServerErrorException
+ *
+ * @package JsonRPC\Exception
+ * @author  Frederic Guillot
+ */
+class ServerErrorException extends RpcCallFailedException
+{
+}
diff --git a/libs/jsonrpc/src/JsonRPC/HttpClient.php b/libs/jsonrpc/src/JsonRPC/HttpClient.php
new file mode 100644
index 00000000..01d50445
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/HttpClient.php
@@ -0,0 +1,449 @@
+<?php
+
+namespace JsonRPC;
+
+use Closure;
+use JsonRPC\Exception\AccessDeniedException;
+use JsonRPC\Exception\ConnectionFailureException;
+use JsonRPC\Exception\ServerErrorException;
+
+/**
+ * Class HttpClient
+ *
+ * @package JsonRPC
+ * @author  Frederic Guillot
+ */
+class HttpClient
+{
+    /**
+     * URL of the server
+     *
+     * @access protected
+     * @var string
+     */
+    protected $url;
+
+    /**
+     * HTTP client timeout
+     *
+     * @access protected
+     * @var integer
+     */
+    protected $timeout = 5;
+
+    /**
+     * Default HTTP headers to send to the server
+     *
+     * @access protected
+     * @var array
+     */
+    protected $headers = array(
+        'User-Agent: JSON-RPC PHP Client <https://github.com/fguillot/JsonRPC>',
+        'Content-Type: application/json',
+        'Accept: application/json',
+        'Connection: close',
+    );
+
+    /**
+     * Username for authentication
+     *
+     * @access protected
+     * @var string
+     */
+    protected $username;
+
+    /**
+     * Password for authentication
+     *
+     * @access protected
+     * @var string
+     */
+    protected $password;
+
+    /**
+     * Enable debug output to the php error log
+     *
+     * @access protected
+     * @var boolean
+     */
+    protected $debug = false;
+
+    /**
+     * Cookies
+     *
+     * @access protected
+     * @var array
+     */
+    protected $cookies = array();
+
+    /**
+     * SSL certificates verification
+     *
+     * @access protected
+     * @var boolean
+     */
+    protected $verifySslCertificate = true;
+
+    /**
+     * SSL client certificate
+     *
+     * @access protected
+     * @var string
+     */
+    protected $sslLocalCert;
+
+    /**
+     * Callback called before the doing the request
+     *
+     * @access protected
+     * @var Closure
+     */
+    protected $beforeRequest;
+
+    /**
+     * HttpClient constructor
+     *
+     * @access public
+     * @param  string $url
+     */
+    public function __construct($url = '')
+    {
+        $this->url = $url;
+    }
+
+    /**
+     * Set URL
+     *
+     * @access public
+     * @param  string $url
+     * @return $this
+     */
+    public function withUrl($url)
+    {
+        $this->url = $url;
+        return $this;
+    }
+
+    /**
+     * Set username
+     *
+     * @access public
+     * @param  string $username
+     * @return $this
+     */
+    public function withUsername($username)
+    {
+        $this->username = $username;
+        return $this;
+    }
+
+    /**
+     * Set password
+     *
+     * @access public
+     * @param  string $password
+     * @return $this
+     */
+    public function withPassword($password)
+    {
+        $this->password = $password;
+        return $this;
+    }
+
+    /**
+     * Set timeout
+     *
+     * @access public
+     * @param  integer $timeout
+     * @return $this
+     */
+    public function withTimeout($timeout)
+    {
+        $this->timeout = $timeout;
+        return $this;
+    }
+
+    /**
+     * Set headers
+     *
+     * @access public
+     * @param  array $headers
+     * @return $this
+     */
+    public function withHeaders(array $headers)
+    {
+        $this->headers = array_merge($this->headers, $headers);
+        return $this;
+    }
+
+    /**
+     * Set cookies
+     *
+     * @access public
+     * @param  array     $cookies
+     * @param  boolean   $replace
+     */
+    public function withCookies(array $cookies, $replace = false)
+    {
+        if ($replace) {
+            $this->cookies = $cookies;
+        } else {
+            $this->cookies = array_merge($this->cookies, $cookies);
+        }
+    }
+
+    /**
+     * Enable debug mode
+     *
+     * @access public
+     * @return $this
+     */
+    public function withDebug()
+    {
+        $this->debug = true;
+        return $this;
+    }
+
+    /**
+     * Disable SSL verification
+     *
+     * @access public
+     * @return $this
+     */
+    public function withoutSslVerification()
+    {
+        $this->verifySslCertificate = false;
+        return $this;
+    }
+
+    /**
+     * Assign a certificate to use TLS
+     *
+     * @access public
+     * @return $this
+     */
+    public function withSslLocalCert($path)
+    {
+        $this->sslLocalCert = $path;
+        return $this;
+    }
+
+    /**
+     * Assign a callback before the request
+     *
+     * @access public
+     * @param  Closure $closure
+     * @return $this
+     */
+    public function withBeforeRequestCallback(Closure $closure)
+    {
+        $this->beforeRequest = $closure;
+        return $this;
+    }
+
+    /**
+     * Get cookies
+     *
+     * @access public
+     * @return array
+     */
+    public function getCookies()
+    {
+        return $this->cookies;
+    }
+
+    /**
+     * Do the HTTP request
+     *
+     * @access public
+     * @throws ConnectionFailureException
+     * @param  string   $payload
+     * @param  string[] $headers Headers for this request
+     * @return array
+     */
+    public function execute($payload, array $headers = array())
+    {
+        if (is_callable($this->beforeRequest)) {
+            call_user_func_array($this->beforeRequest, array($this, $payload, $headers));
+        }
+
+        if ($this->isCurlLoaded()) {
+            $ch = curl_init();
+            $requestHeaders = $this->buildHeaders($headers);
+            $headers = array();
+            curl_setopt_array($ch, array(
+                CURLOPT_URL => trim($this->url),
+                CURLOPT_RETURNTRANSFER => true,
+                CURLOPT_CONNECTTIMEOUT => $this->timeout,
+                CURLOPT_MAXREDIRS => 2,
+                CURLOPT_SSL_VERIFYPEER => $this->verifySslCertificate,
+                CURLOPT_POST => true,
+                CURLOPT_POSTFIELDS => $payload,
+                CURLOPT_HTTPHEADER => $requestHeaders,
+                CURLOPT_HEADERFUNCTION => function ($curl, $header) use (&$headers) {
+                    $headers[] = $header;
+                    return strlen($header);
+                }
+            ));
+            if ($this->sslLocalCert !== null) {
+                curl_setopt($ch, CURLOPT_CAINFO, $this->sslLocalCert);
+            }
+            $response = curl_exec($ch);
+            curl_close($ch);
+            if ($response !== false) {
+                $response = json_decode($response, true);
+            } else {
+                throw new ConnectionFailureException('Unable to establish a connection');
+            }
+        } else {
+            $stream = fopen(trim($this->url), 'r', false, $this->buildContext($payload, $headers));
+
+            if (! is_resource($stream)) {
+                throw new ConnectionFailureException('Unable to establish a connection');
+            }
+
+            $metadata = stream_get_meta_data($stream);
+            $headers = $metadata['wrapper_data'];
+            $response = json_decode(stream_get_contents($stream), true);
+
+            fclose($stream);
+        }
+
+        if ($this->debug) {
+            error_log('==> Request: '.PHP_EOL.(is_string($payload) ? $payload : json_encode($payload, JSON_PRETTY_PRINT)));
+            error_log('==> Headers: '.PHP_EOL.var_export($headers, true));
+            error_log('==> Response: '.PHP_EOL.json_encode($response, JSON_PRETTY_PRINT));
+        }
+
+        $this->handleExceptions($headers);
+        $this->parseCookies($headers);
+
+        return $response;
+    }
+
+    /**
+     * Prepare stream context
+     *
+     * @access protected
+     * @param  string   $payload
+     * @param  string[] $headers
+     * @return resource
+     */
+    protected function buildContext($payload, array $headers = array())
+    {
+        $headers = $this->buildHeaders($headers);
+
+        $options = array(
+            'http' => array(
+                'method' => 'POST',
+                'protocol_version' => 1.1,
+                'timeout' => $this->timeout,
+                'max_redirects' => 2,
+                'header' => implode("\r\n", $headers),
+                'content' => $payload,
+                'ignore_errors' => true,
+            ),
+            'ssl' => array(
+                'verify_peer' => $this->verifySslCertificate,
+                'verify_peer_name' => $this->verifySslCertificate,
+            )
+        );
+
+        if ($this->sslLocalCert !== null) {
+            $options['ssl']['local_cert'] = $this->sslLocalCert;
+        }
+
+        return stream_context_create($options);
+    }
+
+    /**
+     * Parse cookies from response
+     *
+     * @access protected
+     * @param  array $headers
+     */
+    protected function parseCookies(array $headers)
+    {
+        foreach ($headers as $header) {
+            $pos = stripos($header, 'Set-Cookie:');
+
+            if ($pos !== false) {
+                $cookies = explode(';', substr($header, $pos + 11));
+
+                foreach ($cookies as $cookie) {
+                    $item = explode('=', $cookie);
+
+                    if (count($item) === 2) {
+                        $name = trim($item[0]);
+                        $value = $item[1];
+                        $this->cookies[$name] = $value;
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Throw an exception according the HTTP response
+     *
+     * @access public
+     * @param  array   $headers
+     * @throws AccessDeniedException
+     * @throws ServerErrorException
+     */
+    public function handleExceptions(array $headers)
+    {
+        $exceptions = array(
+            '401' => '\JsonRPC\Exception\AccessDeniedException',
+            '403' => '\JsonRPC\Exception\AccessDeniedException',
+            '404' => '\JsonRPC\Exception\ConnectionFailureException',
+            '500' => '\JsonRPC\Exception\ServerErrorException',
+        );
+
+        foreach ($headers as $header) {
+            foreach ($exceptions as $code => $exception) {
+                if (strpos($header, 'HTTP/1.0 '.$code) !== false || strpos($header, 'HTTP/1.1 '.$code) !== false) {
+                    throw new $exception('Response: '.$header);
+                }
+            }
+        }
+    }
+
+    /**
+     * Tests if the curl extension is loaded
+     *
+     * @access protected
+     * @return bool
+     */
+    protected function isCurlLoaded()
+    {
+        return extension_loaded('curl');
+    }
+
+    /**
+     * Prepare Headers
+     *
+     * @access protected
+     * @param array $headers
+     * @return array
+     */
+    protected function buildHeaders(array $headers)
+    {
+        $headers = array_merge($this->headers, $headers);
+
+        if (!empty($this->username) && !empty($this->password)) {
+            $headers[] = 'Authorization: Basic ' . base64_encode($this->username . ':' . $this->password);
+        }
+
+        if (!empty($this->cookies)) {
+            $cookies = array();
+
+            foreach ($this->cookies as $key => $value) {
+                $cookies[] = $key . '=' . $value;
+            }
+
+            $headers[] = 'Cookie: ' . implode('; ', $cookies);
+        }
+        return $headers;
+    }
+}
diff --git a/libs/jsonrpc/src/JsonRPC/MiddlewareHandler.php b/libs/jsonrpc/src/JsonRPC/MiddlewareHandler.php
new file mode 100644
index 00000000..61d5a2d2
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/MiddlewareHandler.php
@@ -0,0 +1,114 @@
+<?php
+
+namespace JsonRPC;
+
+/**
+ * Class MiddlewareHandler
+ *
+ * @package JsonRPC
+ * @author  Frederic Guillot
+ */
+class MiddlewareHandler
+{
+    /**
+     * Procedure Name
+     *
+     * @access protected
+     * @var string
+     */
+    protected $procedureName = '';
+
+    /**
+     * Username
+     *
+     * @access protected
+     * @var string
+     */
+    protected $username = '';
+
+    /**
+     * Password
+     *
+     * @access protected
+     * @var string
+     */
+    protected $password = '';
+
+    /**
+     * List of middleware to execute before to call the method
+     *
+     * @access protected
+     * @var MiddlewareInterface[]
+     */
+    protected $middleware = array();
+
+    /**
+     * Set username
+     *
+     * @access public
+     * @param  string $username
+     * @return $this
+     */
+    public function withUsername($username)
+    {
+        if (! empty($username)) {
+            $this->username = $username;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set password
+     *
+     * @access public
+     * @param  string $password
+     * @return $this
+     */
+    public function withPassword($password)
+    {
+        if (! empty($password)) {
+            $this->password = $password;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set procedure name
+     *
+     * @access public
+     * @param  string $procedureName
+     * @return $this
+     */
+    public function withProcedure($procedureName)
+    {
+        $this->procedureName = $procedureName;
+        return $this;
+    }
+
+    /**
+     * Add a new middleware
+     *
+     * @access public
+     * @param  MiddlewareInterface $middleware
+     * @return MiddlewareHandler
+     */
+    public function withMiddleware(MiddlewareInterface $middleware)
+    {
+        $this->middleware[] = $middleware;
+        return $this;
+    }
+
+    /**
+     * Execute all middleware
+     *
+     * @access public
+     */
+    public function execute()
+    {
+        foreach ($this->middleware as $middleware) {
+            $middleware->execute($this->username, $this->password, $this->procedureName);
+        }
+    }
+}
diff --git a/libs/jsonrpc/src/JsonRPC/MiddlewareInterface.php b/libs/jsonrpc/src/JsonRPC/MiddlewareInterface.php
new file mode 100644
index 00000000..ab55261d
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/MiddlewareInterface.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace JsonRPC;
+
+use JsonRPC\Exception\AccessDeniedException;
+use JsonRPC\Exception\AuthenticationFailureException;
+
+/**
+ * Interface MiddlewareInterface
+ *
+ * @package JsonRPC
+ * @author  Frederic Guillot
+ */
+interface MiddlewareInterface
+{
+    /**
+     * Execute Middleware
+     *
+     * @access public
+     * @param  string $username
+     * @param  string $password
+     * @param  string $procedureName
+     * @throws AccessDeniedException
+     * @throws AuthenticationFailureException
+     */
+    public function execute($username, $password, $procedureName);
+}
diff --git a/libs/jsonrpc/src/JsonRPC/ProcedureHandler.php b/libs/jsonrpc/src/JsonRPC/ProcedureHandler.php
new file mode 100644
index 00000000..fe33f6b1
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/ProcedureHandler.php
@@ -0,0 +1,296 @@
+<?php
+
+namespace JsonRPC;
+
+use BadFunctionCallException;
+use Closure;
+use InvalidArgumentException;
+use ReflectionFunction;
+use ReflectionMethod;
+
+/**
+ * Class ProcedureHandler
+ *
+ * @package JsonRPC
+ * @author  Frederic Guillot
+ */
+class ProcedureHandler
+{
+    /**
+     * List of procedures
+     *
+     * @access protected
+     * @var array
+     */
+    protected $callbacks = array();
+
+    /**
+     * List of classes
+     *
+     * @access protected
+     * @var array
+     */
+    protected $classes = array();
+
+    /**
+     * List of instances
+     *
+     * @access protected
+     * @var array
+     */
+    protected $instances = array();
+
+    /**
+     * Before method name to call
+     *
+     * @access protected
+     * @var string
+     */
+    protected $beforeMethodName = '';
+
+    /**
+     * Register a new procedure
+     *
+     * @access public
+     * @param  string   $procedure       Procedure name
+     * @param  closure  $callback        Callback
+     * @return $this
+     */
+    public function withCallback($procedure, Closure $callback)
+    {
+        $this->callbacks[$procedure] = $callback;
+        return $this;
+    }
+
+    /**
+     * Bind a procedure to a class
+     *
+     * @access public
+     * @param  string   $procedure    Procedure name
+     * @param  mixed    $class        Class name or instance
+     * @param  string   $method       Procedure name
+     * @return $this
+     */
+    public function withClassAndMethod($procedure, $class, $method = '')
+    {
+        if ($method === '') {
+            $method = $procedure;
+        }
+
+        $this->classes[$procedure] = array($class, $method);
+        return $this;
+    }
+
+    /**
+     * Bind a class instance
+     *
+     * @access public
+     * @param  mixed   $instance
+     * @return $this
+     */
+    public function withObject($instance)
+    {
+        $this->instances[] = $instance;
+        return $this;
+    }
+
+    /**
+     * Set a before method to call
+     *
+     * @access public
+     * @param  string $methodName
+     * @return $this
+     */
+    public function withBeforeMethod($methodName)
+    {
+        $this->beforeMethodName = $methodName;
+        return $this;
+    }
+
+    /**
+     * Register multiple procedures from array
+     *
+     * @access public
+     * @param  array  $callbacks Array with procedure names (array keys) and callbacks (array values)
+     * @return $this
+     */
+    public function withCallbackArray($callbacks)
+    {
+        foreach ($callbacks as $procedure => $callback) {
+            $this->withCallback($procedure, $callback);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Bind multiple procedures to classes from array
+     *
+     * @access public
+     * @param  array  $callbacks Array with procedure names (array keys) and class and method names (array values)
+     * @return $this
+     */
+    public function withClassAndMethodArray($callbacks)
+    {
+        foreach ($callbacks as $procedure => $callback) {
+            $this->withClassAndMethod($procedure, $callback[0], $callback[1]);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Execute the procedure
+     *
+     * @access public
+     * @param  string   $procedure    Procedure name
+     * @param  array    $params       Procedure params
+     * @return mixed
+     */
+    public function executeProcedure($procedure, array $params = array())
+    {
+        if (isset($this->callbacks[$procedure])) {
+            return $this->executeCallback($this->callbacks[$procedure], $params);
+        } elseif (isset($this->classes[$procedure]) && method_exists($this->classes[$procedure][0], $this->classes[$procedure][1])) {
+            return $this->executeMethod($this->classes[$procedure][0], $this->classes[$procedure][1], $params);
+        }
+
+        foreach ($this->instances as $instance) {
+            if (method_exists($instance, $procedure)) {
+                return $this->executeMethod($instance, $procedure, $params);
+            }
+        }
+
+        throw new BadFunctionCallException('Unable to find the procedure');
+    }
+
+    /**
+     * Execute a callback
+     *
+     * @access public
+     * @param  Closure   $callback     Callback
+     * @param  array     $params       Procedure params
+     * @return mixed
+     */
+    public function executeCallback(Closure $callback, $params)
+    {
+        $reflection = new ReflectionFunction($callback);
+
+        $arguments = $this->getArguments(
+            $params,
+            $reflection->getParameters(),
+            $reflection->getNumberOfRequiredParameters(),
+            $reflection->getNumberOfParameters()
+        );
+
+        return $reflection->invokeArgs($arguments);
+    }
+
+    /**
+     * Execute a method
+     *
+     * @access public
+     * @param  mixed     $class        Class name or instance
+     * @param  string    $method       Method name
+     * @param  array     $params       Procedure params
+     * @return mixed
+     */
+    public function executeMethod($class, $method, $params)
+    {
+        $instance = is_string($class) ? new $class : $class;
+        $reflection = new ReflectionMethod($class, $method);
+
+        $this->executeBeforeMethod($instance, $method);
+
+        $arguments = $this->getArguments(
+            $params,
+            $reflection->getParameters(),
+            $reflection->getNumberOfRequiredParameters(),
+            $reflection->getNumberOfParameters()
+        );
+
+        return $reflection->invokeArgs($instance, $arguments);
+    }
+
+    /**
+     * Execute before method if defined
+     *
+     * @access public
+     * @param  mixed  $object
+     * @param  string $method
+     */
+    public function executeBeforeMethod($object, $method)
+    {
+        if ($this->beforeMethodName !== '' && method_exists($object, $this->beforeMethodName)) {
+            call_user_func_array(array($object, $this->beforeMethodName), array($method));
+        }
+    }
+
+    /**
+     * Get procedure arguments
+     *
+     * @access public
+     * @param  array   $requestParams    Incoming arguments
+     * @param  array   $methodParams     Procedure arguments
+     * @param  integer $nbRequiredParams Number of required parameters
+     * @param  integer $nbMaxParams      Maximum number of parameters
+     * @return array
+     */
+    public function getArguments(array $requestParams, array $methodParams, $nbRequiredParams, $nbMaxParams)
+    {
+        $nbParams = count($requestParams);
+
+        if ($nbParams < $nbRequiredParams) {
+            throw new InvalidArgumentException('Wrong number of arguments');
+        }
+
+        if ($nbParams > $nbMaxParams) {
+            throw new InvalidArgumentException('Too many arguments');
+        }
+
+        if ($this->isPositionalArguments($requestParams)) {
+            return $requestParams;
+        }
+
+        return $this->getNamedArguments($requestParams, $methodParams);
+    }
+
+    /**
+     * Return true if we have positional parameters
+     *
+     * @access public
+     * @param  array    $request_params      Incoming arguments
+     * @return bool
+     */
+    public function isPositionalArguments(array $request_params)
+    {
+        return array_keys($request_params) === range(0, count($request_params) - 1);
+    }
+
+    /**
+     * Get named arguments
+     *
+     * @access public
+     * @param  array $requestParams Incoming arguments
+     * @param  array $methodParams  Procedure arguments
+     * @return array
+     */
+    public function getNamedArguments(array $requestParams, array $methodParams)
+    {
+        $params = array();
+
+        foreach ($methodParams as $p) {
+            $name = $p->getName();
+
+            if (array_key_exists($name, $requestParams)) {
+                $params[$name] = $requestParams[$name];
+            } elseif ($p->isDefaultValueAvailable()) {
+                $params[$name] = $p->getDefaultValue();
+            } else {
+                throw new InvalidArgumentException('Missing argument: '.$name);
+            }
+        }
+
+        return $params;
+    }
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Request/BatchRequestParser.php b/libs/jsonrpc/src/JsonRPC/Request/BatchRequestParser.php
new file mode 100644
index 00000000..c0fc776e
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Request/BatchRequestParser.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace JsonRPC\Request;
+
+/**
+ * Class BatchRequestParser
+ *
+ * @package JsonRPC\Request
+ * @author  Frederic Guillot
+ */
+class BatchRequestParser extends RequestParser
+{
+    /**
+     * Parse incoming request
+     *
+     * @access public
+     * @return string
+     */
+    public function parse()
+    {
+        $responses = array();
+
+        foreach ($this->payload as $payload) {
+            $responses[] = RequestParser::create()
+                ->withPayload($payload)
+                ->withProcedureHandler($this->procedureHandler)
+                ->withMiddlewareHandler($this->middlewareHandler)
+                ->withLocalException($this->localExceptions)
+                ->parse();
+        }
+
+        $responses = array_filter($responses);
+        return empty($responses) ? '' : '['.implode(',', $responses).']';
+    }
+
+    /**
+     * Return true if we have a batch request
+     *
+     * ex : [
+     *   0 => '...',
+     *   1 => '...',
+     *   2 => '...',
+     *   3 => '...',
+     * ]
+     *
+     * @static
+     * @access public
+     * @param  array $payload
+     * @return bool
+     */
+    public static function isBatchRequest(array $payload)
+    {
+        return array_keys($payload) === range(0, count($payload) - 1);
+    }
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Request/RequestBuilder.php b/libs/jsonrpc/src/JsonRPC/Request/RequestBuilder.php
new file mode 100644
index 00000000..145d21c1
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Request/RequestBuilder.php
@@ -0,0 +1,129 @@
+<?php
+
+namespace JsonRPC\Request;
+
+/**
+ * Class RequestBuilder
+ *
+ * @package JsonRPC\Request
+ * @author  Frederic Guillot
+ */
+class RequestBuilder
+{
+    /**
+     * Request ID
+     *
+     * @access private
+     * @var mixed
+     */
+    private $id = null;
+
+    /**
+     * Method name
+     *
+     * @access private
+     * @var string
+     */
+    private $procedure = '';
+
+    /**
+     * Method arguments
+     *
+     * @access private
+     * @var array
+     */
+    private $params = array();
+
+    /**
+     * Additional request attributes
+     *
+     * @access private
+     * @var array
+     */
+    private $reqattrs = array();
+
+    /**
+     * Get new object instance
+     *
+     * @static
+     * @access public
+     * @return RequestBuilder
+     */
+    public static function create()
+    {
+        return new static();
+    }
+
+    /**
+     * Set id
+     *
+     * @access public
+     * @param  null $id
+     * @return RequestBuilder
+     */
+    public function withId($id)
+    {
+        $this->id = $id;
+        return $this;
+    }
+
+    /**
+     * Set method
+     *
+     * @access public
+     * @param  string $procedure
+     * @return RequestBuilder
+     */
+    public function withProcedure($procedure)
+    {
+        $this->procedure = $procedure;
+        return $this;
+    }
+
+    /**
+     * Set parameters
+     *
+     * @access public
+     * @param  array $params
+     * @return RequestBuilder
+     */
+    public function withParams(array $params)
+    {
+        $this->params = $params;
+        return $this;
+    }
+
+    /**
+     * Set additional request attributes
+     *
+     * @access public
+     * @param  array $reqattrs
+     * @return RequestBuilder
+     */
+    public function withRequestAttributes(array $reqattrs)
+    {
+        $this->reqattrs = $reqattrs;
+        return $this;
+    }
+
+    /**
+     * Build the payload
+     *
+     * @access public
+     * @return string
+     */
+    public function build()
+    {
+        $payload = array_merge_recursive($this->reqattrs, array(
+            'jsonrpc' => '2.0',
+            'method' => $this->procedure,
+            'id' => $this->id ?: mt_rand(),
+        ));
+
+        if (! empty($this->params)) {
+            $payload['params'] = $this->params;
+        }
+
+        return json_encode($payload);
+    }
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Request/RequestParser.php b/libs/jsonrpc/src/JsonRPC/Request/RequestParser.php
new file mode 100644
index 00000000..ea1b7d43
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Request/RequestParser.php
@@ -0,0 +1,200 @@
+<?php
+
+namespace JsonRPC\Request;
+
+use Exception;
+use JsonRPC\Exception\AccessDeniedException;
+use JsonRPC\Exception\AuthenticationFailureException;
+use JsonRPC\Exception\InvalidJsonRpcFormatException;
+use JsonRPC\MiddlewareHandler;
+use JsonRPC\ProcedureHandler;
+use JsonRPC\Response\ResponseBuilder;
+use JsonRPC\Validator\JsonFormatValidator;
+use JsonRPC\Validator\RpcFormatValidator;
+
+/**
+ * Class RequestParser
+ *
+ * @package JsonRPC
+ * @author  Frederic Guillot
+ */
+class RequestParser
+{
+    /**
+     * Request payload
+     *
+     * @access protected
+     * @var mixed
+     */
+    protected $payload;
+
+    /**
+     * List of exceptions that should not be relayed to the client
+     *
+     * @access protected
+     * @var array()
+     */
+    protected $localExceptions = array(
+        'JsonRPC\Exception\AuthenticationFailureException',
+        'JsonRPC\Exception\AccessDeniedException',
+    );
+
+    /**
+     * ProcedureHandler
+     *
+     * @access protected
+     * @var ProcedureHandler
+     */
+    protected $procedureHandler;
+
+    /**
+     * MiddlewareHandler
+     *
+     * @access protected
+     * @var MiddlewareHandler
+     */
+    protected $middlewareHandler;
+
+    /**
+     * Get new object instance
+     *
+     * @static
+     * @access public
+     * @return RequestParser
+     */
+    public static function create()
+    {
+        return new static();
+    }
+
+    /**
+     * Set payload
+     *
+     * @access public
+     * @param  mixed $payload
+     * @return $this
+     */
+    public function withPayload($payload)
+    {
+        $this->payload = $payload;
+        return $this;
+    }
+
+    /**
+     * Exception classes that should not be relayed to the client
+     *
+     * @access public
+     * @param  mixed $exception
+     * @return $this
+     */
+    public function withLocalException($exception)
+    {
+        if (is_array($exception)) {
+            $this->localExceptions = array_merge($this->localExceptions, $exception);
+        } else {
+            $this->localExceptions[] = $exception;
+        }
+        
+        return $this;
+    }
+
+    /**
+     * Set procedure handler
+     *
+     * @access public
+     * @param  ProcedureHandler $procedureHandler
+     * @return $this
+     */
+    public function withProcedureHandler(ProcedureHandler $procedureHandler)
+    {
+        $this->procedureHandler = $procedureHandler;
+        return $this;
+    }
+
+    /**
+     * Set middleware handler
+     *
+     * @access public
+     * @param  MiddlewareHandler $middlewareHandler
+     * @return $this
+     */
+    public function withMiddlewareHandler(MiddlewareHandler $middlewareHandler)
+    {
+        $this->middlewareHandler = $middlewareHandler;
+        return $this;
+    }
+
+    /**
+     * Parse incoming request
+     *
+     * @access public
+     * @return string
+     * @throws AccessDeniedException
+     * @throws AuthenticationFailureException
+     */
+    public function parse()
+    {
+        try {
+
+            JsonFormatValidator::validate($this->payload);
+            RpcFormatValidator::validate($this->payload);
+
+            $this->middlewareHandler
+                ->withProcedure($this->payload['method'])
+                ->execute();
+
+            $result = $this->procedureHandler->executeProcedure(
+                $this->payload['method'],
+                empty($this->payload['params']) ? array() : $this->payload['params']
+            );
+
+            if (! $this->isNotification()) {
+                return ResponseBuilder::create()
+                    ->withId($this->payload['id'])
+                    ->withResult($result)
+                    ->build();
+            }
+        } catch (Exception $e) {
+            return $this->handleExceptions($e);
+        }
+
+        return '';
+    }
+
+    /**
+     * Handle exceptions
+     *
+     * @access protected
+     * @param  Exception $e
+     * @return string
+     * @throws Exception
+     */
+    protected function handleExceptions(Exception $e)
+    {
+        foreach ($this->localExceptions as $exception) {
+            if ($e instanceof $exception) {
+                throw $e;
+            }
+        }
+
+        if ($e instanceof InvalidJsonRpcFormatException || ! $this->isNotification()) {
+            return ResponseBuilder::create()
+                ->withId(isset($this->payload['id']) ? $this->payload['id'] : null)
+                ->withException($e)
+                ->build();
+        }
+
+        return '';
+    }
+
+    /**
+     * Return true if the message is a notification
+     *
+     * @access protected
+     * @return bool
+     */
+    protected function isNotification()
+    {
+        return is_array($this->payload) && !isset($this->payload['id']);
+    }
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Response/ResponseBuilder.php b/libs/jsonrpc/src/JsonRPC/Response/ResponseBuilder.php
new file mode 100644
index 00000000..a0348ce3
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Response/ResponseBuilder.php
@@ -0,0 +1,336 @@
+<?php
+
+namespace JsonRPC\Response;
+
+use BadFunctionCallException;
+use Exception;
+use InvalidArgumentException;
+use JsonRPC\Exception\AccessDeniedException;
+use JsonRPC\Exception\AuthenticationFailureException;
+use JsonRPC\Exception\InvalidJsonFormatException;
+use JsonRPC\Exception\InvalidJsonRpcFormatException;
+use JsonRPC\Exception\ResponseEncodingFailureException;
+use JsonRPC\Exception\ResponseException;
+use JsonRPC\Validator\JsonEncodingValidator;
+
+/**
+ * Class ResponseBuilder
+ *
+ * @package JsonRPC
+ * @author  Frederic Guillot
+ */
+class ResponseBuilder
+{
+    /**
+     * Payload ID
+     *
+     * @access protected
+     * @var mixed
+     */
+    protected $id;
+
+    /**
+     * Payload ID
+     *
+     * @access protected
+     * @var mixed
+     */
+    protected $result;
+
+    /**
+     * Payload error code
+     *
+     * @access protected
+     * @var integer
+     */
+    protected $errorCode;
+
+    /**
+     * Payload error message
+     *
+     * @access private
+     * @var string
+     */
+    protected $errorMessage;
+
+    /**
+     * Payload error data
+     *
+     * @access protected
+     * @var mixed
+     */
+    protected $errorData;
+
+    /**
+     * HTTP Headers
+     *
+     * @access protected
+     * @var array
+     */
+    protected $headers = array(
+        'Content-Type' => 'application/json',
+    );
+
+    /**
+     * HTTP status
+     *
+     * @access protected
+     * @var string
+     */
+    protected $status;
+
+    /**
+     * Exception
+     *
+     * @access protected
+     * @var ResponseException
+     */
+    protected $exception;
+
+    /**
+     * Get new object instance
+     *
+     * @static
+     * @access public
+     * @return ResponseBuilder
+     */
+    public static function create()
+    {
+        return new static();
+    }
+
+    /**
+     * Set id
+     *
+     * @access public
+     * @param  mixed  $id
+     * @return $this
+     */
+    public function withId($id)
+    {
+        $this->id = $id;
+        return $this;
+    }
+
+    /**
+     * Set result
+     *
+     * @access public
+     * @param  mixed $result
+     * @return $this
+     */
+    public function withResult($result)
+    {
+        $this->result = $result;
+        return $this;
+    }
+
+    /**
+     * Set error
+     *
+     * @access public
+     * @param  integer $code
+     * @param  string  $message
+     * @param  string  $data
+     * @return $this
+     */
+    public function withError($code, $message, $data = '')
+    {
+        $this->errorCode = $code;
+        $this->errorMessage = $message;
+        $this->errorData = $data;
+        return $this;
+    }
+
+    /**
+     * Set exception
+     *
+     * @access public
+     * @param  Exception $exception
+     * @return $this
+     */
+    public function withException(Exception $exception)
+    {
+        $this->exception = $exception;
+        return $this;
+    }
+
+    /**
+     * Add HTTP header
+     *
+     * @access public
+     * @param  string $name
+     * @param  string $value
+     * @return $this
+     */
+    public function withHeader($name, $value)
+    {
+        $this->headers[$name] = $value;
+        return $this;
+    }
+
+    /**
+     * Add HTTP Status
+     *
+     * @access public
+     * @param  string $status
+     * @return $this
+     */
+    public function withStatus($status)
+    {
+        $this->status = $status;
+        return $this;
+    }
+
+    /**
+     * Get status
+     *
+     * @access public
+     * @return string
+     */
+    public function getStatus()
+    {
+        return $this->status;
+    }
+
+    /**
+     * Get headers
+     *
+     * @access public
+     * @return string[]
+     */
+    public function getHeaders()
+    {
+        return $this->headers;
+    }
+
+    /**
+     * Build response
+     *
+     * @access public
+     * @return string
+     */
+    public function build()
+    {
+        $options = 0;
+        if (defined('JSON_UNESCAPED_SLASHES')) {
+            $options |= JSON_UNESCAPED_SLASHES;
+        }
+        if (defined('JSON_UNESCAPED_UNICODE')) {
+            $options |= JSON_UNESCAPED_UNICODE;
+        }
+        $encodedResponse = json_encode($this->buildResponse(), $options);
+        JsonEncodingValidator::validate();
+
+        return $encodedResponse;
+    }
+
+    /**
+     * Send HTTP headers
+     *
+     * @access public
+     * @return $this
+     */
+    public function sendHeaders()
+    {
+        if (! empty($this->status)) {
+            header($this->status);
+        }
+
+        foreach ($this->headers as $name => $value) {
+            header($name.': '.$value);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Build response payload
+     *
+     * @access protected
+     * @return array
+     */
+    protected function buildResponse()
+    {
+        $response = array('jsonrpc' => '2.0');
+        $this->handleExceptions();
+
+        if (! empty($this->errorMessage)) {
+            $response['error'] = $this->buildErrorResponse();
+        } else {
+            $response['result'] = $this->result;
+        }
+
+        $response['id'] = $this->id;
+        return $response;
+    }
+
+    /**
+     * Build response error payload
+     *
+     * @access protected
+     * @return array
+     */
+    protected function buildErrorResponse()
+    {
+        $response = array(
+            'code' => $this->errorCode,
+            'message' => $this->errorMessage,
+        );
+
+        if (! empty($this->errorData)) {
+            $response['data'] = $this->errorData;
+        }
+
+        return $response;
+    }
+
+    /**
+     * Transform exceptions to JSON-RPC errors
+     *
+     * @access protected
+     */
+    protected function handleExceptions()
+    {
+        try {
+            if ($this->exception instanceof Exception) {
+                throw $this->exception;
+            }
+        } catch (InvalidJsonFormatException $e) {
+            $this->errorCode = -32700;
+            $this->errorMessage = 'Parse error';
+            $this->id = null;
+        } catch (InvalidJsonRpcFormatException $e) {
+            $this->errorCode = -32600;
+            $this->errorMessage = 'Invalid Request';
+            $this->id = null;
+        } catch (BadFunctionCallException $e) {
+            $this->errorCode = -32601;
+            $this->errorMessage = 'Method not found';
+        } catch (InvalidArgumentException $e) {
+            $this->errorCode = -32602;
+            $this->errorMessage = 'Invalid params';
+            $this->errorData = $this->exception->getMessage();
+        } catch (ResponseEncodingFailureException $e) {
+            $this->errorCode = -32603;
+            $this->errorMessage = 'Internal error';
+            $this->errorData = $this->exception->getMessage();
+        } catch (AuthenticationFailureException $e) {
+            $this->errorCode = 401;
+            $this->errorMessage = 'Unauthorized';
+            $this->status = 'HTTP/1.0 401 Unauthorized';
+            $this->withHeader('WWW-Authenticate', 'Basic realm="JsonRPC"');
+        } catch (AccessDeniedException $e) {
+            $this->errorCode = 403;
+            $this->errorMessage = 'Forbidden';
+            $this->status = 'HTTP/1.0 403 Forbidden';
+        } catch (ResponseException $e) {
+            $this->errorCode = $this->exception->getCode();
+            $this->errorMessage = $this->exception->getMessage();
+            $this->errorData = $this->exception->getData();
+        } catch (Exception $e) {
+            $this->errorCode = $this->exception->getCode();
+            $this->errorMessage = $this->exception->getMessage();
+        }
+    }
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Response/ResponseParser.php b/libs/jsonrpc/src/JsonRPC/Response/ResponseParser.php
new file mode 100644
index 00000000..02d449ba
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Response/ResponseParser.php
@@ -0,0 +1,154 @@
+<?php
+
+namespace JsonRPC\Response;
+
+use BadFunctionCallException;
+use InvalidArgumentException;
+use Exception;
+use JsonRPC\Exception\InvalidJsonFormatException;
+use JsonRPC\Exception\InvalidJsonRpcFormatException;
+use JsonRPC\Exception\ResponseException;
+use JsonRPC\Validator\JsonFormatValidator;
+
+/**
+ * Class ResponseParser
+ *
+ * @package JsonRPC\Request
+ * @author  Frederic Guillot
+ */
+class ResponseParser
+{
+    /**
+     * Payload
+     *
+     * @access private
+     * @var mixed
+     */
+    private $payload;
+
+    /**
+     * Do not immediately throw an exception on error. Return it instead.
+     *
+     * @var bool
+     */
+    private $returnException = false;
+
+    /**
+     * Get new object instance
+     *
+     * @static
+     * @access public
+     * @return ResponseParser
+     */
+    public static function create()
+    {
+        return new static();
+    }
+
+    /**
+     * Set Return Exception Or Throw It
+     *
+     * @param $returnException
+     * @return ResponseParser
+     */
+    public function withReturnException($returnException)
+    {
+        $this->returnException = $returnException;
+        return $this;
+    }
+
+    /**
+     * Set payload
+     *
+     * @access public
+     * @param  mixed $payload
+     * @return $this
+     */
+    public function withPayload($payload)
+    {
+        $this->payload = $payload;
+        return $this;
+    }
+
+    /**
+     * Parse response
+     *
+     * @return array|Exception|null
+     * @throws InvalidJsonFormatException
+     * @throws BadFunctionCallException
+     * @throws InvalidJsonRpcFormatException
+     * @throws InvalidArgumentException
+     * @throws Exception
+     * @throws ResponseException
+     */
+    public function parse()
+    {
+        JsonFormatValidator::validate($this->payload);
+
+        if ($this->isBatchResponse()) {
+            $results = array();
+
+            foreach ($this->payload as $response) {
+                $results[] = self::create()
+                    ->withReturnException($this->returnException)
+                    ->withPayload($response)
+                    ->parse();
+            }
+
+            return $results;
+        }
+
+        if (isset($this->payload['error']['code'])) {
+            try {
+                $this->handleExceptions();
+            } catch (Exception $e) {
+                if ($this->returnException) {
+                    return $e;
+                }
+                throw $e;
+            }
+        }
+
+        return isset($this->payload['result']) ? $this->payload['result'] : null;
+    }
+
+    /**
+     * Handle exceptions
+     *
+     * @access private
+     * @throws InvalidJsonFormatException
+     * @throws InvalidJsonRpcFormatException
+     * @throws ResponseException
+     */
+    private function handleExceptions()
+    {
+        switch ($this->payload['error']['code']) {
+            case -32700:
+                throw new InvalidJsonFormatException('Parse error: '.$this->payload['error']['message']);
+            case -32600:
+                throw new InvalidJsonRpcFormatException('Invalid Request: '.$this->payload['error']['message']);
+            case -32601:
+                throw new BadFunctionCallException('Procedure not found: '.$this->payload['error']['message']);
+            case -32602:
+                throw new InvalidArgumentException('Invalid arguments: '.$this->payload['error']['message']);
+            default:
+                throw new ResponseException(
+                    $this->payload['error']['message'],
+                    $this->payload['error']['code'],
+                    null,
+                    isset($this->payload['error']['data']) ? $this->payload['error']['data'] : null
+                );
+        }
+    }
+
+    /**
+     * Return true if we have a batch response
+     *
+     * @access private
+     * @return boolean
+     */
+    private function isBatchResponse()
+    {
+        return array_keys($this->payload) === range(0, count($this->payload) - 1);
+    }
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Server.php b/libs/jsonrpc/src/JsonRPC/Server.php
new file mode 100644
index 00000000..1ed075a4
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Server.php
@@ -0,0 +1,386 @@
+<?php
+
+namespace JsonRPC;
+
+use Closure;
+use Exception;
+use JsonRPC\Request\BatchRequestParser;
+use JsonRPC\Request\RequestParser;
+use JsonRPC\Response\ResponseBuilder;
+use JsonRPC\Validator\HostValidator;
+use JsonRPC\Validator\JsonFormatValidator;
+use JsonRPC\Validator\UserValidator;
+
+/**
+ * JsonRPC server class
+ *
+ * @package JsonRPC
+ * @author  Frederic Guillot
+ */
+class Server
+{
+    /**
+     * Allowed hosts
+     *
+     * @access protected
+     * @var array
+     */
+    protected $hosts = array();
+
+    /**
+     * Data received from the client
+     *
+     * @access protected
+     * @var array
+     */
+    protected $payload = array();
+
+    /**
+     * List of exceptions that should not be relayed to the client
+     *
+     * @access protected
+     * @var array()
+     */
+    protected $localExceptions = array();
+
+    /**
+     * Username
+     *
+     * @access protected
+     * @var string
+     */
+    protected $username = '';
+
+    /**
+     * Password
+     *
+     * @access protected
+     * @var string
+     */
+    protected $password = '';
+
+    /**
+     * Allowed users
+     *
+     * @access protected
+     * @var array
+     */
+    protected $users = array();
+
+    /**
+     * $_SERVER
+     *
+     * @access protected
+     * @var array
+     */
+    protected $serverVariable;
+
+    /**
+     * ProcedureHandler object
+     *
+     * @access protected
+     * @var ProcedureHandler
+     */
+    protected $procedureHandler;
+
+    /**
+     * MiddlewareHandler object
+     *
+     * @access protected
+     * @var MiddlewareHandler
+     */
+    protected $middlewareHandler;
+
+    /**
+     * Response builder
+     *
+     * @access protected
+     * @var ResponseBuilder
+     */
+    protected $responseBuilder;
+
+    /**
+     * Response builder
+     *
+     * @access protected
+     * @var RequestParser
+     */
+    protected $requestParser;
+
+    /**
+     *
+     * Batch request parser
+     *
+     * @access protected
+     * @var BatchRequestParser
+     */
+    protected $batchRequestParser;
+
+    /**
+     * Constructor
+     *
+     * @access public
+     * @param  string              $request
+     * @param  array               $server
+     * @param  ResponseBuilder     $responseBuilder
+     * @param  RequestParser       $requestParser
+     * @param  BatchRequestParser  $batchRequestParser
+     * @param  ProcedureHandler    $procedureHandler
+     * @param  MiddlewareHandler   $middlewareHandler
+     */
+    public function __construct(
+        $request = '',
+        array $server = array(),
+        ResponseBuilder $responseBuilder = null,
+        RequestParser $requestParser = null,
+        BatchRequestParser $batchRequestParser = null,
+        ProcedureHandler $procedureHandler = null,
+        MiddlewareHandler $middlewareHandler = null
+    ) {
+        if ($request !== '') {
+            $this->payload = json_decode($request, true);
+        } else {
+            $this->payload = json_decode(file_get_contents('php://input'), true);
+        }
+
+        $this->serverVariable = $server ?: $_SERVER;
+        $this->responseBuilder = $responseBuilder ?: ResponseBuilder::create();
+        $this->requestParser = $requestParser ?: RequestParser::create();
+        $this->batchRequestParser = $batchRequestParser ?: BatchRequestParser::create();
+        $this->procedureHandler = $procedureHandler ?: new ProcedureHandler();
+        $this->middlewareHandler = $middlewareHandler ?: new MiddlewareHandler();
+    }
+
+    /**
+     * Define alternative authentication header
+     *
+     * @access public
+     * @param  string   $header   Header name
+     * @return $this
+     */
+    public function setAuthenticationHeader($header)
+    {
+        if (! empty($header)) {
+            $header = 'HTTP_'.str_replace('-', '_', strtoupper($header));
+            $value = $this->getServerVariable($header);
+
+            if (! empty($value)) {
+                list($this->username, $this->password) = explode(':', base64_decode($value));
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get ProcedureHandler
+     *
+     * @access public
+     * @return ProcedureHandler
+     */
+    public function getProcedureHandler()
+    {
+        return $this->procedureHandler;
+    }
+
+    /**
+     * Get MiddlewareHandler
+     *
+     * @access public
+     * @return MiddlewareHandler
+     */
+    public function getMiddlewareHandler()
+    {
+        return $this->middlewareHandler;
+    }
+
+    /**
+     * Get username
+     *
+     * @access public
+     * @return string
+     */
+    public function getUsername()
+    {
+        return $this->username ?: $this->getServerVariable('PHP_AUTH_USER');
+    }
+
+    /**
+     * Get password
+     *
+     * @access public
+     * @return string
+     */
+    public function getPassword()
+    {
+        return $this->password ?: $this->getServerVariable('PHP_AUTH_PW');
+    }
+
+    /**
+     * IP based client restrictions
+     *
+     * @access public
+     * @param  array   $hosts   List of hosts
+     * @return $this
+     */
+    public function allowHosts(array $hosts)
+    {
+        $this->hosts = $hosts;
+        return $this;
+    }
+
+    /**
+     * HTTP Basic authentication
+     *
+     * @access public
+     * @param  array   $users   Dictionary of username/password
+     * @return $this
+     */
+    public function authentication(array $users)
+    {
+        $this->users = $users;
+        return $this;
+    }
+
+    /**
+     * Register a new procedure
+     *
+     * @access public
+     * @deprecated Use $server->getProcedureHandler()->withCallback($procedure, $callback)
+     * @param  string   $procedure       Procedure name
+     * @param  closure  $callback        Callback
+     * @return $this
+     */
+    public function register($procedure, Closure $callback)
+    {
+        $this->procedureHandler->withCallback($procedure, $callback);
+        return $this;
+    }
+
+    /**
+     * Bind a procedure to a class
+     *
+     * @access public
+     * @deprecated Use $server->getProcedureHandler()->withClassAndMethod($procedure, $class, $method);
+     * @param  string   $procedure    Procedure name
+     * @param  mixed    $class        Class name or instance
+     * @param  string   $method       Procedure name
+     * @return $this
+     */
+    public function bind($procedure, $class, $method = '')
+    {
+        $this->procedureHandler->withClassAndMethod($procedure, $class, $method);
+        return $this;
+    }
+
+    /**
+     * Bind a class instance
+     *
+     * @access public
+     * @deprecated Use $server->getProcedureHandler()->withObject($instance);
+     * @param  mixed   $instance    Instance name
+     * @return $this
+     */
+    public function attach($instance)
+    {
+        $this->procedureHandler->withObject($instance);
+        return $this;
+    }
+
+    /**
+     * Exception classes that should not be relayed to the client
+     *
+     * @access public
+     * @param  Exception|string $exception
+     * @return $this
+     */
+    public function withLocalException($exception)
+    {
+        $this->localExceptions[] = $exception;
+        return $this;
+    }
+
+    /**
+     * Parse incoming requests
+     *
+     * @access public
+     * @return string
+     */
+    public function execute()
+    {
+        try {
+            JsonFormatValidator::validate($this->payload);
+            HostValidator::validate($this->hosts, $this->getServerVariable('REMOTE_ADDR'));
+            UserValidator::validate($this->users, $this->getUsername(), $this->getPassword());
+
+            $this->middlewareHandler
+                ->withUsername($this->getUsername())
+                ->withPassword($this->getPassword())
+            ;
+
+            $response = $this->parseRequest();
+
+        } catch (Exception $e) {
+            $response = $this->handleExceptions($e);
+        }
+
+        $this->responseBuilder->sendHeaders();
+        return $response;
+    }
+
+    /**
+     * Handle exceptions
+     * 
+     * @access protected
+     * @param  Exception $e
+     * @return string
+     * @throws Exception
+     */
+    protected function handleExceptions(Exception $e)
+    {
+        foreach ($this->localExceptions as $exception) {
+            if ($e instanceof $exception) {
+                throw $e;
+            }
+        }
+
+        return $this->responseBuilder->withException($e)->build();
+    }
+
+    /**
+     * Parse incoming request
+     *
+     * @access protected
+     * @return string
+     */
+    protected function parseRequest()
+    {
+        if (BatchRequestParser::isBatchRequest($this->payload)) {
+            return $this->batchRequestParser
+                ->withPayload($this->payload)
+                ->withProcedureHandler($this->procedureHandler)
+                ->withMiddlewareHandler($this->middlewareHandler)
+                ->withLocalException($this->localExceptions)
+                ->parse();
+        }
+
+        return $this->requestParser
+            ->withPayload($this->payload)
+            ->withProcedureHandler($this->procedureHandler)
+            ->withMiddlewareHandler($this->middlewareHandler)
+            ->withLocalException($this->localExceptions)
+            ->parse();
+    }
+
+    /**
+     * Check existence and get value of server variable
+     *
+     * @access protected
+     * @param  string $variable
+     * @return string|null
+     */
+    protected function getServerVariable($variable)
+    {
+        return isset($this->serverVariable[$variable]) ? $this->serverVariable[$variable] : null;
+    }
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Validator/HostValidator.php b/libs/jsonrpc/src/JsonRPC/Validator/HostValidator.php
new file mode 100644
index 00000000..3f9d6989
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Validator/HostValidator.php
@@ -0,0 +1,73 @@
+<?php
+
+namespace JsonRPC\Validator;
+
+use JsonRPC\Exception\AccessDeniedException;
+
+/**
+ * Class HostValidator
+ *
+ * @package JsonRPC\Validator
+ * @author  Frederic Guillot
+ */
+class HostValidator
+{
+    /**
+     * Validate
+     *
+     * @static
+     * @access public
+     * @param  array  $hosts
+     * @param  string $remoteAddress
+     * @throws AccessDeniedException
+     */
+    public static function validate(array $hosts, $remoteAddress)
+    {
+        if (!empty($hosts)) {
+            foreach ($hosts as $host) {
+                if (self::ipMatch($remoteAddress, $host)) {
+                    return;
+                }
+            }
+            throw new AccessDeniedException('Access Forbidden');
+        }
+    }
+    
+    /**
+     * Validate remoteAddress match host
+     * @param $remoteAddress
+     * @param $host
+     * @return bool
+     */
+    public static function ipMatch($remoteAddress, $host)
+    {
+        $host = trim($host);
+        if (strpos($host, '/') !== false) {
+            list($network, $mask) = explode('/', $host);
+            if (self::netMatch($remoteAddress, $network, $mask)) {
+                return true;
+            }
+        }
+
+        if ($host === $remoteAddress) {
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * validate the ipAddress in network
+     *  192.168.1.1/24
+     * @param $clientIp
+     * @param $networkIp
+     * @param $mask
+     *
+     * @return bool
+     */
+    public static function netMatch($clientIp, $networkIp, $mask)
+    {
+        $mask1 = 32 - $mask;
+        return ((ip2long($clientIp) >> $mask1) == (ip2long($networkIp) >> $mask1));
+    }
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Validator/JsonEncodingValidator.php b/libs/jsonrpc/src/JsonRPC/Validator/JsonEncodingValidator.php
new file mode 100644
index 00000000..0bbc4abd
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Validator/JsonEncodingValidator.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace JsonRPC\Validator;
+
+use JsonRPC\Exception\ResponseEncodingFailureException;
+
+/**
+ * Class JsonEncodingValidator
+ *
+ * @package JsonRPC\Validator
+ * @author  Frederic Guillot
+ */
+class JsonEncodingValidator
+{
+    public static function validate()
+    {
+        $jsonError = json_last_error();
+
+        if ($jsonError !== JSON_ERROR_NONE) {
+            switch ($jsonError) {
+                case JSON_ERROR_DEPTH:
+                    $errorMessage = 'Maximum stack depth exceeded';
+                    break;
+                case JSON_ERROR_STATE_MISMATCH:
+                    $errorMessage = 'Underflow or the modes mismatch';
+                    break;
+                case JSON_ERROR_CTRL_CHAR:
+                    $errorMessage = 'Unexpected control character found';
+                    break;
+                case JSON_ERROR_SYNTAX:
+                    $errorMessage = 'Syntax error, malformed JSON';
+                    break;
+                case JSON_ERROR_UTF8:
+                    $errorMessage = 'Malformed UTF-8 characters, possibly incorrectly encoded';
+                    break;
+                default:
+                    $errorMessage = 'Unknown error';
+                    break;
+            }
+
+            throw new ResponseEncodingFailureException($errorMessage, $jsonError);
+        }
+    }
+}
diff --git a/libs/jsonrpc/src/JsonRPC/Validator/JsonFormatValidator.php b/libs/jsonrpc/src/JsonRPC/Validator/JsonFormatValidator.php
new file mode 100644
index 00000000..ca8e7a69
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Validator/JsonFormatValidator.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace JsonRPC\Validator;
+
+use JsonRPC\Exception\InvalidJsonFormatException;
+
+/**
+ * Class JsonFormatValidator
+ *
+ * @package JsonRPC\Validator
+ * @author  Frederic Guillot
+ */
+class JsonFormatValidator
+{
+    /**
+     * Validate
+     *
+     * @static
+     * @access public
+     * @param  mixed $payload
+     * @throws InvalidJsonFormatException
+     */
+    public static function validate($payload)
+    {
+        if (! is_array($payload)) {
+            throw new InvalidJsonFormatException('Malformed payload');
+        }
+    }
+}
+
diff --git a/libs/jsonrpc/src/JsonRPC/Validator/RpcFormatValidator.php b/libs/jsonrpc/src/JsonRPC/Validator/RpcFormatValidator.php
new file mode 100644
index 00000000..f253a5a1
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Validator/RpcFormatValidator.php
@@ -0,0 +1,35 @@
+<?php
+
+namespace JsonRPC\Validator;
+
+use JsonRPC\Exception\InvalidJsonRpcFormatException;
+
+/**
+ * Class RpcFormatValidator
+ *
+ * @package JsonRPC\Validator
+ * @author  Frederic Guillot
+ */
+class RpcFormatValidator
+{
+    /**
+     * Validate
+     *
+     * @static
+     * @access public
+     * @param  array $payload
+     * @throws InvalidJsonRpcFormatException
+     */
+    public static function validate(array $payload)
+    {
+        if (! isset($payload['jsonrpc']) ||
+            ! isset($payload['method']) ||
+            ! is_string($payload['method']) ||
+            $payload['jsonrpc'] !== '2.0' ||
+            (isset($payload['params']) && ! is_array($payload['params']))) {
+
+            throw new InvalidJsonRpcFormatException('Invalid JSON RPC payload');
+        }
+    }
+}
+
diff --git a/libs/jsonrpc/src/JsonRPC/Validator/UserValidator.php b/libs/jsonrpc/src/JsonRPC/Validator/UserValidator.php
new file mode 100644
index 00000000..4f889719
--- /dev/null
+++ b/libs/jsonrpc/src/JsonRPC/Validator/UserValidator.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace JsonRPC\Validator;
+
+use JsonRPC\Exception\AuthenticationFailureException;
+
+/**
+ * Class UserValidator
+ *
+ * @package JsonRPC\Validator
+ * @author  Frederic Guillot
+ */
+class UserValidator
+{
+    public static function validate(array $users, $username, $password)
+    {
+        if (! empty($users) && (! isset($users[$username]) || $users[$username] !== $password)) {
+            throw new AuthenticationFailureException('Access not allowed');
+        }
+    }
+}
diff --git a/libs/jsonrpc/tests/ClientTest.php b/libs/jsonrpc/tests/ClientTest.php
new file mode 100644
index 00000000..d1f83877
--- /dev/null
+++ b/libs/jsonrpc/tests/ClientTest.php
@@ -0,0 +1,103 @@
+<?php
+
+use JsonRPC\Client;
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+class ClientTest extends PHPUnit_Framework_TestCase
+{
+    private $httpClient;
+
+    public function setUp()
+    {
+        $this->httpClient = $this
+            ->getMockBuilder('\JsonRPC\HttpClient')
+            ->setMethods(array('execute'))
+            ->getMock();
+    }
+
+    public function testSendBatch()
+    {
+        $client = new Client('', false, $this->httpClient);
+        $response = array(
+            array(
+                'jsonrpc' => '2.0',
+                'result' => 'c',
+                'id' => 1,
+            ),
+            array(
+                'jsonrpc' => '2.0',
+                'result' => 'd',
+                'id' => 2,
+            )
+        );
+
+        $this->httpClient
+            ->expects($this->once())
+            ->method('execute')
+            ->with($this->stringContains('[{"jsonrpc":"2.0","method":"methodA","id":'))
+            ->will($this->returnValue($response));
+
+
+        $result = $client->batch()
+            ->execute('methodA', array('a' => 'b'))
+            ->execute('methodB', array('a' => 'b'))
+            ->send();
+
+        $this->assertEquals(array('c', 'd'), $result);
+    }
+
+    public function testSendRequest()
+    {
+        $client = new Client('', false, $this->httpClient);
+
+        $this->httpClient
+            ->expects($this->once())
+            ->method('execute')
+            ->with($this->stringContains('{"jsonrpc":"2.0","method":"methodA","id":'))
+            ->will($this->returnValue(array('jsonrpc' => '2.0', 'result' => 'foobar', 'id' => 1)));
+
+        $result = $client->execute('methodA', array('a' => 'b'));
+        $this->assertEquals($result, 'foobar');
+    }
+
+    public function testSendRequestWithError()
+    {
+        $client = new Client('', false, $this->httpClient);
+
+        $this->httpClient
+            ->expects($this->once())
+            ->method('execute')
+            ->with($this->stringContains('{"jsonrpc":"2.0","method":"methodA","id":'))
+            ->will($this->returnValue(array(
+                'jsonrpc' => '2.0',
+                'error' => array(
+                    'code' => -32601,
+                    'message' => 'Method not found',
+                ),
+            )));
+
+        $this->setExpectedException('BadFunctionCallException');
+        $client->execute('methodA', array('a' => 'b'));
+    }
+
+    public function testSendRequestWithErrorAndReturnExceptionEnabled()
+    {
+        $client = new Client('', true, $this->httpClient);
+
+        $this->httpClient
+            ->expects($this->once())
+            ->method('execute')
+            ->with($this->stringContains('{"jsonrpc":"2.0","method":"methodA","id":'))
+            ->will($this->returnValue(array(
+                'jsonrpc' => '2.0',
+                'error' => array(
+                    'code' => -32601,
+                    'message' => 'Method not found',
+                ),
+            )));
+
+        $result = $client->execute('methodA', array('a' => 'b'));
+        $this->assertInstanceOf('BadFunctionCallException', $result);
+    }
+}
diff --git a/libs/jsonrpc/tests/HttpClientTest.php b/libs/jsonrpc/tests/HttpClientTest.php
new file mode 100644
index 00000000..71e6c8d0
--- /dev/null
+++ b/libs/jsonrpc/tests/HttpClientTest.php
@@ -0,0 +1,220 @@
+<?php
+
+namespace JsonRPC;
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+defined('CURLOPT_URL') or define('CURLOPT_URL', 10002);
+defined('CURLOPT_RETURNTRANSFER') or define('CURLOPT_RETURNTRANSFER', 19913);
+defined('CURLOPT_CONNECTTIMEOUT') or define('CURLOPT_CONNECTTIMEOUT', 78);
+defined('CURLOPT_MAXREDIRS') or define('CURLOPT_MAXREDIRS', 68);
+defined('CURLOPT_SSL_VERIFYPEER') or define('CURLOPT_SSL_VERIFYPEER', 64);
+defined('CURLOPT_POST') or define('CURLOPT_POST', 47);
+defined('CURLOPT_POSTFIELDS') or define('CURLOPT_POSTFIELDS', 10015);
+defined('CURLOPT_HTTPHEADER') or define('CURLOPT_HTTPHEADER', 10023);
+defined('CURLOPT_HEADERFUNCTION') or define('CURLOPT_HEADERFUNCTION', 20079);
+defined('CURLOPT_CAINFO') or define('CURLOPT_CAINFO', 10065);
+
+function extension_loaded($extension) {
+    return HttpClientTest::$functions->extension_loaded($extension);
+}
+
+function fopen($url, $mode, $use_include_path, $context)
+{
+    return HttpClientTest::$functions->fopen($url, $mode, $use_include_path, $context);
+}
+
+function stream_context_create(array $params)
+{
+    return HttpClientTest::$functions->stream_context_create($params);
+}
+
+function curl_init() {
+    return HttpClientTest::$functions->curl_init();
+}
+
+function curl_setopt_array($ch, array $params) {
+    HttpClientTest::$functions->curl_setopt_array($ch, $params);
+}
+
+function curl_setopt($ch, $option, $value) {
+    HttpClientTest::$functions->curl_setopt($ch, $option, $value);
+}
+
+function curl_exec($ch) {
+    return HttpClientTest::$functions->curl_exec($ch);
+}
+
+function curl_close($ch) {
+    HttpClientTest::$functions->curl_close($ch);
+}
+
+class HttpClientTest extends \PHPUnit_Framework_TestCase
+{
+    public static $functions;
+
+    public function setUp()
+    {
+        self::$functions = $this
+            ->getMockBuilder('stdClass')
+            ->setMethods(array('extension_loaded', 'fopen', 'stream_context_create',
+                'curl_init', 'curl_setopt_array', 'curl_setopt', 'curl_exec', 'curl_close'))
+            ->getMock();
+    }
+
+    public function testWithServerError()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\ServerErrorException');
+
+        $httpClient = new HttpClient();
+        $httpClient->handleExceptions(array(
+            'HTTP/1.0 301 Moved Permanently',
+            'Connection: close',
+            'HTTP/1.1 500 Internal Server Error',
+        ));
+    }
+
+    public function testWithConnectionFailure()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\ConnectionFailureException');
+
+        $httpClient = new HttpClient();
+        $httpClient->handleExceptions(array(
+            'HTTP/1.1 404 Not Found',
+        ));
+    }
+
+    public function testWithAccessForbidden()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\AccessDeniedException');
+
+        $httpClient = new HttpClient();
+        $httpClient->handleExceptions(array(
+            'HTTP/1.1 403 Forbidden',
+        ));
+    }
+
+    public function testWithAccessNotAllowed()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\AccessDeniedException');
+
+        $httpClient = new HttpClient();
+        $httpClient->handleExceptions(array(
+            'HTTP/1.0 401 Unauthorized',
+        ));
+    }
+
+    public function testWithCallback()
+    {
+        self::$functions
+            ->expects($this->at(0))
+            ->method('extension_loaded')
+            ->with('curl')
+            ->will($this->returnValue(false));
+
+        self::$functions
+            ->expects($this->at(1))
+            ->method('stream_context_create')
+            ->with(array(
+                'http' => array(
+                    'method' => 'POST',
+                    'protocol_version' => 1.1,
+                    'timeout' => 5,
+                    'max_redirects' => 2,
+                    'header' => implode("\r\n", array(
+                        'User-Agent: JSON-RPC PHP Client <https://github.com/fguillot/JsonRPC>',
+                        'Content-Type: application/json',
+                        'Accept: application/json',
+                        'Connection: close',
+                        'Content-Length: 4',
+                    )),
+                    'content' => 'test',
+                    'ignore_errors' => true,
+                ),
+                'ssl' => array(
+                    'verify_peer' => true,
+                    'verify_peer_name' => true,
+                )
+            ))
+            ->will($this->returnValue('context'));
+
+        self::$functions
+            ->expects($this->at(2))
+            ->method('fopen')
+            ->with('url', 'r', false, 'context')
+            ->will($this->returnValue(false));
+
+        $httpClient = new HttpClient('url');
+        $httpClient->withBeforeRequestCallback(function(HttpClient $client, $payload) {
+            $client->withHeaders(array('Content-Length: '.strlen($payload)));
+        });
+
+        $this->setExpectedException('\JsonRPC\Exception\ConnectionFailureException');
+        $httpClient->execute('test');
+    }
+
+    public function testWithCurl()
+    {
+        self::$functions
+            ->expects($this->at(0))
+            ->method('extension_loaded')
+            ->with('curl')
+            ->will($this->returnValue(true));
+
+        self::$functions
+            ->expects($this->at(1))
+            ->method('curl_init')
+            ->will($this->returnValue('curl'));
+
+        self::$functions
+            ->expects($this->at(2))
+            ->method('curl_setopt_array')
+            ->with('curl', array(
+                CURLOPT_URL => 'url',
+                CURLOPT_RETURNTRANSFER => true,
+                CURLOPT_CONNECTTIMEOUT => 5,
+                CURLOPT_MAXREDIRS => 2,
+                CURLOPT_SSL_VERIFYPEER => true,
+                CURLOPT_POST => true,
+                CURLOPT_POSTFIELDS => 'test',
+                CURLOPT_HTTPHEADER => array(
+                    'User-Agent: JSON-RPC PHP Client <https://github.com/fguillot/JsonRPC>',
+                    'Content-Type: application/json',
+                    'Accept: application/json',
+                    'Connection: close',
+                    'Content-Length: 4',
+                ),
+                CURLOPT_HEADERFUNCTION => function ($curl, $header) use (&$headers) {
+                    $headers[] = $header;
+                    return strlen($header);
+                }
+            ));
+
+        self::$functions
+            ->expects($this->at(3))
+            ->method('curl_setopt')
+            ->with('curl', CURLOPT_CAINFO, 'test.crt');
+
+        self::$functions
+            ->expects($this->at(4))
+            ->method('curl_exec')
+            ->with('curl')
+            ->will($this->returnValue(false));
+
+        self::$functions
+            ->expects($this->at(5))
+            ->method('curl_close')
+            ->with('curl');
+
+        $httpClient = new HttpClient('url');
+        $httpClient
+            ->withSslLocalCert('test.crt')
+            ->withBeforeRequestCallback(function(HttpClient $client, $payload) {
+                $client->withHeaders(array('Content-Length: '.strlen($payload)));
+            });
+
+
+        $this->setExpectedException('\JsonRPC\Exception\ConnectionFailureException');
+        $httpClient->execute('test');
+    }
+}
diff --git a/libs/jsonrpc/tests/MiddlewareHandlerTest.php b/libs/jsonrpc/tests/MiddlewareHandlerTest.php
new file mode 100644
index 00000000..be70cbf7
--- /dev/null
+++ b/libs/jsonrpc/tests/MiddlewareHandlerTest.php
@@ -0,0 +1,40 @@
+<?php
+
+use JsonRPC\Exception\AuthenticationFailureException;
+use JsonRPC\MiddlewareHandler;
+use JsonRPC\MiddlewareInterface;
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+class FirstMiddleware implements MiddlewareInterface
+{
+    public function execute($username, $password, $procedureName)
+    {
+    }
+}
+
+class SecondMiddleware implements MiddlewareInterface
+{
+    public function execute($username, $password, $procedureName)
+    {
+        if ($username === 'myUsername' && $password === 'myPassword' && $procedureName === 'myProcedure') {
+            throw new AuthenticationFailureException('Bad user');
+        }
+    }
+}
+
+class MiddlewareHandlerTest extends PHPUnit_Framework_TestCase
+{
+    public function testMiddlewareCanRaiseException()
+    {
+        $this->setExpectedException('JsonRpc\Exception\AuthenticationFailureException');
+
+        $middlewareHandler = new MiddlewareHandler();
+        $middlewareHandler->withUsername('myUsername');
+        $middlewareHandler->withPassword('myPassword');
+        $middlewareHandler->withProcedure('myProcedure');
+        $middlewareHandler->withMiddleware(new FirstMiddleware());
+        $middlewareHandler->withMiddleware(new SecondMiddleware());
+        $middlewareHandler->execute();
+    }
+}
diff --git a/libs/jsonrpc/tests/ProcedureHandlerTest.php b/libs/jsonrpc/tests/ProcedureHandlerTest.php
new file mode 100644
index 00000000..983016c5
--- /dev/null
+++ b/libs/jsonrpc/tests/ProcedureHandlerTest.php
@@ -0,0 +1,153 @@
+<?php
+
+use JsonRPC\ProcedureHandler;
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+class A
+{
+    public function getAll($p1, $p2, $p3 = 4)
+    {
+        return $p1 + $p2 + $p3;
+    }
+}
+
+class B
+{
+    public function getAll($p1)
+    {
+        return $p1 + 2;
+    }
+}
+
+class ClassWithBeforeMethod
+{
+    private $foobar = '';
+
+    public function before($procedure)
+    {
+        $this->foobar = $procedure;
+    }
+
+    public function myProcedure()
+    {
+        return $this->foobar;
+    }
+}
+
+class ProcedureHandlerTest extends PHPUnit_Framework_TestCase
+{
+    public function testProcedureNotFound()
+    {
+        $this->setExpectedException('BadFunctionCallException');
+        $handler = new ProcedureHandler;
+        $handler->executeProcedure('a');
+    }
+
+    public function testCallbackNotFound()
+    {
+        $this->setExpectedException('BadFunctionCallException');
+        $handler = new ProcedureHandler;
+        $handler->withCallback('b', function() {});
+        $handler->executeProcedure('a');
+    }
+
+    public function testClassNotFound()
+    {
+        $this->setExpectedException('BadFunctionCallException');
+        $handler = new ProcedureHandler;
+        $handler->withClassAndMethod('getAllTasks', 'c', 'getAll');
+        $handler->executeProcedure('getAllTasks');
+    }
+
+    public function testMethodNotFound()
+    {
+        $this->setExpectedException('BadFunctionCallException');
+        $handler = new ProcedureHandler;
+        $handler->withClassAndMethod('getAllTasks', 'A', 'getNothing');
+        $handler->executeProcedure('getAllTasks');
+    }
+
+    public function testIsPositionalArguments()
+    {
+        $handler = new ProcedureHandler;
+        $this->assertFalse($handler->isPositionalArguments(
+            array('a' => 'b', 'c' => 'd')
+        ));
+
+        $handler = new ProcedureHandler;
+        $this->assertTrue($handler->isPositionalArguments(
+            array('a', 'b', 'c')
+        ));
+    }
+
+    public function testBindNamedArguments()
+    {
+        $handler = new ProcedureHandler;
+        $handler->withClassAndMethod('getAllA', 'A', 'getAll');
+        $handler->withClassAndMethod('getAllB', 'B', 'getAll');
+        $handler->withClassAndMethod('getAllC', new B, 'getAll');
+        $this->assertEquals(6, $handler->executeProcedure('getAllA', array('p2' => 4, 'p1' => -2)));
+        $this->assertEquals(10, $handler->executeProcedure('getAllA', array('p2' => 4, 'p3' => 8, 'p1' => -2)));
+        $this->assertEquals(6, $handler->executeProcedure('getAllB', array('p1' => 4)));
+        $this->assertEquals(5, $handler->executeProcedure('getAllC', array('p1' => 3)));
+    }
+
+    public function testBindPositionalArguments()
+    {
+        $handler = new ProcedureHandler;
+        $handler->withClassAndMethod('getAllA', 'A', 'getAll');
+        $handler->withClassAndMethod('getAllB', 'B', 'getAll');
+        $this->assertEquals(6, $handler->executeProcedure('getAllA', array(4, -2)));
+        $this->assertEquals(2, $handler->executeProcedure('getAllA', array(4, 0, -2)));
+        $this->assertEquals(4, $handler->executeProcedure('getAllB', array(2)));
+    }
+
+    public function testRegisterNamedArguments()
+    {
+        $handler = new ProcedureHandler;
+        $handler->withCallback('getAllA', function($p1, $p2, $p3 = 4) {
+            return $p1 + $p2 + $p3;
+        });
+
+        $this->assertEquals(6, $handler->executeProcedure('getAllA', array('p2' => 4, 'p1' => -2)));
+        $this->assertEquals(10, $handler->executeProcedure('getAllA', array('p2' => 4, 'p3' => 8, 'p1' => -2)));
+    }
+
+    public function testRegisterPositionalArguments()
+    {
+        $handler = new ProcedureHandler;
+        $handler->withCallback('getAllA', function($p1, $p2, $p3 = 4) {
+            return $p1 + $p2 + $p3;
+        });
+
+        $this->assertEquals(6, $handler->executeProcedure('getAllA', array(4, -2)));
+        $this->assertEquals(2, $handler->executeProcedure('getAllA', array(4, 0, -2)));
+    }
+
+    public function testTooManyArguments()
+    {
+        $this->setExpectedException('InvalidArgumentException');
+
+        $handler = new ProcedureHandler;
+        $handler->withClassAndMethod('getAllC', new B, 'getAll');
+        $handler->executeProcedure('getAllC', array('p1' => 3, 'p2' => 5));
+    }
+
+    public function testNotEnoughArguments()
+    {
+        $this->setExpectedException('InvalidArgumentException');
+
+        $handler = new ProcedureHandler;
+        $handler->withClassAndMethod('getAllC', new B, 'getAll');
+        $handler->executeProcedure('getAllC');
+    }
+
+    public function testBeforeMethod()
+    {
+        $handler = new ProcedureHandler;
+        $handler->withObject(new ClassWithBeforeMethod);
+        $handler->withBeforeMethod('before');
+        $this->assertEquals('myProcedure', $handler->executeProcedure('myProcedure'));
+    }
+}
diff --git a/libs/jsonrpc/tests/Request/RequestBuilderTest.php b/libs/jsonrpc/tests/Request/RequestBuilderTest.php
new file mode 100644
index 00000000..ce9cf674
--- /dev/null
+++ b/libs/jsonrpc/tests/Request/RequestBuilderTest.php
@@ -0,0 +1,53 @@
+<?php
+
+use JsonRPC\Request\RequestBuilder;
+
+require_once __DIR__.'/../../../../vendor/autoload.php';
+
+class RequestBuilderTest extends PHPUnit_Framework_TestCase
+{
+    public function testBuilder()
+    {
+        $payload = RequestBuilder::create()
+            ->withId(123)
+            ->withProcedure('foobar')
+            ->withParams(array(1, 2, 3))
+            ->build();
+
+        $this->assertEquals('{"jsonrpc":"2.0","method":"foobar","id":123,"params":[1,2,3]}', $payload);
+    }
+
+    public function testBuilderWithoutParams()
+    {
+        $payload = RequestBuilder::create()
+            ->withId(123)
+            ->withProcedure('foobar')
+            ->build();
+
+        $this->assertEquals('{"jsonrpc":"2.0","method":"foobar","id":123}', $payload);
+    }
+
+    public function testBuilderWithoutId()
+    {
+        $payload = RequestBuilder::create()
+            ->withProcedure('foobar')
+            ->withParams(array(1, 2, 3))
+            ->build();
+
+        $result = json_decode($payload, true);
+        $this->assertNotNull($result['id']);
+    }
+
+    public function testBuilderWithAdditionalRequestAttributes()
+    {
+        $payload = RequestBuilder::create()
+            ->withProcedure('foobar')
+            ->withParams(array(1, 2, 3))
+            ->withRequestAttributes(array("some-attr" => 42))
+            ->build();
+
+        $result = json_decode($payload, true);
+        $this->assertNotNull($result['some-attr']);
+    }
+
+}
diff --git a/libs/jsonrpc/tests/Response/HeaderMockTest.php b/libs/jsonrpc/tests/Response/HeaderMockTest.php
new file mode 100644
index 00000000..cbeb7388
--- /dev/null
+++ b/libs/jsonrpc/tests/Response/HeaderMockTest.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace JsonRPC\Response;
+
+use PHPUnit_Framework_TestCase;
+
+require_once __DIR__.'/../../../../vendor/autoload.php';
+
+function header($value)
+{
+    HeaderMockTest::$functions->header($value);
+}
+
+abstract class HeaderMockTest extends PHPUnit_Framework_TestCase
+{
+    public static $functions;
+
+    public function setUp()
+    {
+        self::$functions = $this
+            ->getMockBuilder('stdClass')
+            ->setMethods(array('header'))
+            ->getMock();
+    }
+}
diff --git a/libs/jsonrpc/tests/Response/ResponseBuilderTest.php b/libs/jsonrpc/tests/Response/ResponseBuilderTest.php
new file mode 100644
index 00000000..e2dcb2a0
--- /dev/null
+++ b/libs/jsonrpc/tests/Response/ResponseBuilderTest.php
@@ -0,0 +1,151 @@
+<?php
+
+use JsonRPC\Exception\AccessDeniedException;
+use JsonRPC\Exception\AuthenticationFailureException;
+use JsonRPC\Exception\InvalidJsonFormatException;
+use JsonRPC\Exception\InvalidJsonRpcFormatException;
+use JsonRPC\Exception\ResponseEncodingFailureException;
+use JsonRPC\Exception\ResponseException;
+use JsonRPC\Response\ResponseBuilder;
+
+require_once __DIR__.'/../../../../vendor/autoload.php';
+
+class ResponseBuilderTest extends PHPUnit_Framework_TestCase
+{
+    public function testBuildResponse()
+    {
+        $response = ResponseBuilder::create()
+            ->withId(123)
+            ->withResult('test')
+            ->build();
+
+        $this->assertEquals('{"jsonrpc":"2.0","result":"test","id":123}', $response);
+    }
+
+    public function testBuildResponseWithError()
+    {
+        $response = ResponseBuilder::create()
+            ->withId(123)
+            ->withResult('test')
+            ->withError(42, 'Test', 'More info')
+            ->build();
+
+        $this->assertEquals('{"jsonrpc":"2.0","error":{"code":42,"message":"Test","data":"More info"},"id":123}', $response);
+    }
+
+    public function testBuildResponseWithException()
+    {
+        $response = ResponseBuilder::create()
+            ->withId(123)
+            ->withResult('test')
+            ->withException(new Exception('Test'))
+            ->build();
+
+        $this->assertEquals('{"jsonrpc":"2.0","error":{"code":0,"message":"Test"},"id":123}', $response);
+    }
+
+    public function testBuildResponseWithResponseException()
+    {
+        $exception = new ResponseException('Error', 42);
+        $exception->setData('Data');
+
+        $response = ResponseBuilder::create()
+            ->withId(123)
+            ->withResult('test')
+            ->withException($exception)
+            ->build();
+
+        $this->assertEquals('{"jsonrpc":"2.0","error":{"code":42,"message":"Error","data":"Data"},"id":123}', $response);
+    }
+
+    public function testBuildResponseWithAccessDeniedException()
+    {
+        $responseBuilder = ResponseBuilder::create();
+        $response = $responseBuilder
+            ->withId(123)
+            ->withResult('test')
+            ->withException(new AccessDeniedException('Test'))
+            ->build();
+
+        $this->assertEquals('{"jsonrpc":"2.0","error":{"code":403,"message":"Forbidden"},"id":123}', $response);
+        $this->assertEquals('HTTP/1.0 403 Forbidden', $responseBuilder->getStatus());
+
+        $this->assertEquals(
+            array('Content-Type' => 'application/json'),
+            $responseBuilder->getHeaders()
+        );
+    }
+
+    public function testBuildResponseWithAuthenticationFailureException()
+    {
+        $responseBuilder = ResponseBuilder::create();
+        $response = $responseBuilder
+            ->withId(123)
+            ->withResult('test')
+            ->withException(new AuthenticationFailureException('Test'))
+            ->build();
+
+        $this->assertEquals('{"jsonrpc":"2.0","error":{"code":401,"message":"Unauthorized"},"id":123}', $response);
+        $this->assertEquals('HTTP/1.0 401 Unauthorized', $responseBuilder->getStatus());
+
+        $this->assertEquals(
+            array('Content-Type' => 'application/json', 'WWW-Authenticate' => 'Basic realm="JsonRPC"'),
+            $responseBuilder->getHeaders()
+        );
+    }
+
+    public function testBuildResponseWithResponseEncodingFailureException()
+    {
+        $response = ResponseBuilder::create()
+            ->withId(123)
+            ->withResult('test')
+            ->withException(new ResponseEncodingFailureException('Test'))
+            ->build();
+
+        $this->assertEquals('{"jsonrpc":"2.0","error":{"code":-32603,"message":"Internal error","data":"Test"},"id":123}', $response);
+    }
+
+    public function testBuildResponseWithInvalidArgumentException()
+    {
+        $response = ResponseBuilder::create()
+            ->withId(123)
+            ->withResult('test')
+            ->withException(new InvalidArgumentException('Test'))
+            ->build();
+
+        $this->assertEquals('{"jsonrpc":"2.0","error":{"code":-32602,"message":"Invalid params","data":"Test"},"id":123}', $response);
+    }
+
+    public function testBuildResponseWithBadFunctionCallException()
+    {
+        $response = ResponseBuilder::create()
+            ->withId(123)
+            ->withResult('test')
+            ->withException(new BadFunctionCallException('Test'))
+            ->build();
+
+        $this->assertEquals('{"jsonrpc":"2.0","error":{"code":-32601,"message":"Method not found"},"id":123}', $response);
+    }
+
+    public function testBuildResponseWithInvalidJsonRpcFormatException()
+    {
+        $response = ResponseBuilder::create()
+            ->withId(123)
+            ->withResult('test')
+            ->withException(new InvalidJsonRpcFormatException('Test'))
+            ->build();
+
+        $this->assertEquals('{"jsonrpc":"2.0","error":{"code":-32600,"message":"Invalid Request"},"id":null}', $response);
+    }
+
+    public function testBuildResponseWithInvalidJsonFormatException()
+    {
+        $response = ResponseBuilder::create()
+            ->withId(123)
+            ->withResult('test')
+            ->withException(new InvalidJsonFormatException('Test'))
+            ->build();
+
+        $this->assertEquals('{"jsonrpc":"2.0","error":{"code":-32700,"message":"Parse error"},"id":null}', $response);
+    }
+}
diff --git a/libs/jsonrpc/tests/Response/ResponseParserTest.php b/libs/jsonrpc/tests/Response/ResponseParserTest.php
new file mode 100644
index 00000000..f195014f
--- /dev/null
+++ b/libs/jsonrpc/tests/Response/ResponseParserTest.php
@@ -0,0 +1,100 @@
+<?php
+
+use JsonRPC\Response\ResponseParser;
+
+require_once __DIR__.'/../../../../vendor/autoload.php';
+
+class ResponseParserTest extends PHPUnit_Framework_TestCase
+{
+    public function testSingleRequest()
+    {
+        $result = ResponseParser::create()
+            ->withPayload(json_decode('{"jsonrpc": "2.0", "result": "foobar", "id": "1"}', true))
+            ->parse();
+
+        $this->assertEquals('foobar', $result);
+    }
+
+    public function testWithBadJsonFormat()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\InvalidJsonFormatException');
+
+        ResponseParser::create()
+            ->withPayload('foobar')
+            ->parse();
+    }
+
+    public function testWithBadProcedure()
+    {
+        $this->setExpectedException('BadFunctionCallException');
+
+        ResponseParser::create()
+            ->withPayload(json_decode('{"jsonrpc": "2.0", "error": {"code": -32601, "message": "Method not found"}, "id": "1"}', true))
+            ->parse();
+    }
+
+    public function testWithInvalidArgs()
+    {
+        $this->setExpectedException('InvalidArgumentException');
+
+        ResponseParser::create()
+            ->withPayload(json_decode('{"jsonrpc": "2.0", "error": {"code": -32602, "message": "Invalid params"}, "id": "1"}', true))
+            ->parse();
+    }
+
+    public function testWithInvalidRequest()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\InvalidJsonRpcFormatException');
+
+        ResponseParser::create()
+            ->withPayload(json_decode('{"jsonrpc": "2.0", "error": {"code": -32600, "message": "Invalid Request"}, "id": null}', true))
+            ->parse();
+    }
+
+    public function testWithParseError()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\InvalidJsonFormatException');
+
+        ResponseParser::create()
+            ->withPayload(json_decode('{"jsonrpc": "2.0", "error": {"code": -32700, "message": "Parse error"}, "id": null}', true))
+            ->parse();
+    }
+
+    public function testWithOtherError()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\ResponseException');
+
+        ResponseParser::create()
+            ->withPayload(json_decode('{"jsonrpc": "2.0", "error": {"code": 42, "message": "Something", "data": "foobar"}, "id": null}', true))
+            ->parse();
+    }
+
+    public function testBatch()
+    {
+        $payload = '[
+            {"jsonrpc": "2.0", "result": 7, "id": "1"},
+            {"jsonrpc": "2.0", "result": 19, "id": "2"}
+        ]';
+
+        $result = ResponseParser::create()
+            ->withPayload(json_decode($payload, true))
+            ->parse();
+
+        $this->assertEquals(array(7, 19), $result);
+    }
+
+    public function testBatchWithError()
+    {
+        $payload = '[
+            {"jsonrpc": "2.0", "result": 7, "id": "1"},
+            {"jsonrpc": "2.0", "result": 19, "id": "2"},
+            {"jsonrpc": "2.0", "error": {"code": -32602, "message": "Invalid params"}, "id": "1"}
+        ]';
+
+        $this->setExpectedException('InvalidArgumentException');
+
+        ResponseParser::create()
+            ->withPayload(json_decode($payload, true))
+            ->parse();
+    }
+}
diff --git a/libs/jsonrpc/tests/ServerProtocolTest.php b/libs/jsonrpc/tests/ServerProtocolTest.php
new file mode 100644
index 00000000..a488015b
--- /dev/null
+++ b/libs/jsonrpc/tests/ServerProtocolTest.php
@@ -0,0 +1,237 @@
+<?php
+
+use JsonRPC\Server;
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+require_once __DIR__.'/Response/HeaderMockTest.php';
+
+class C
+{
+    public function doSomething()
+    {
+        return 'something';
+    }
+}
+
+class ServerProtocolTest extends \JsonRPC\Response\HeaderMockTest
+{
+    public function testPositionalParameters()
+    {
+        $subtract = function ($minuend, $subtrahend) {
+            return $minuend - $subtrahend;
+        };
+
+        $server = new Server('{"jsonrpc": "2.0", "method": "subtract", "params": [42, 23], "id": 1}');
+        $server->register('subtract', $subtract);
+
+        $this->assertEquals(
+            json_decode('{"jsonrpc": "2.0", "result": 19, "id": 1}', true),
+            json_decode($server->execute(), true)
+        );
+
+        $server = new Server('{"jsonrpc": "2.0", "method": "subtract", "params": [23, 42], "id": 1}');
+        $server->register('subtract', $subtract);
+
+        $this->assertEquals(
+            json_decode('{"jsonrpc": "2.0", "result": -19, "id": 1}', true),
+            json_decode($server->execute(), true)
+        );
+    }
+
+    public function testNamedParameters()
+    {
+        $subtract = function ($minuend, $subtrahend) {
+            return $minuend - $subtrahend;
+        };
+
+        $server = new Server('{"jsonrpc": "2.0", "method": "subtract", "params": {"subtrahend": 23, "minuend": 42}, "id": 3}');
+        $server->register('subtract', $subtract);
+
+        $this->assertEquals(
+            json_decode('{"jsonrpc": "2.0", "result": 19, "id": 3}', true),
+            json_decode($server->execute(), true)
+        );
+
+        $server = new Server('{"jsonrpc": "2.0", "method": "subtract", "params": {"minuend": 42, "subtrahend": 23}, "id": 4}');
+        $server->register('subtract', $subtract);
+
+        $this->assertEquals(
+            json_decode('{"jsonrpc": "2.0", "result": 19, "id": 4}', true),
+            json_decode($server->execute(), true)
+        );
+    }
+
+    public function testNotification()
+    {
+        $update = function($p1, $p2, $p3, $p4, $p5) {};
+        $foobar = function() {};
+
+        $server = new Server('{"jsonrpc": "2.0", "method": "update", "params": [1,2,3,4,5]}');
+        $server->register('update', $update);
+        $server->register('foobar', $foobar);
+
+        $this->assertEquals('', $server->execute());
+
+        $server = new Server('{"jsonrpc": "2.0", "method": "foobar"}');
+        $server->register('update', $update);
+        $server->register('foobar', $foobar);
+
+        $this->assertEquals('', $server->execute());
+    }
+
+    public function testNoMethod()
+    {
+        $server = new Server('{"jsonrpc": "2.0", "method": "foobar", "id": "1"}');
+
+        $this->assertEquals(
+            json_decode('{"jsonrpc": "2.0", "error": {"code": -32601, "message": "Method not found"}, "id": "1"}', true),
+            json_decode($server->execute(), true)
+        );
+    }
+
+    public function testInvalidJson()
+    {
+        $server = new Server('{"jsonrpc": "2.0", "method": "foobar, "params": "bar", "baz]');
+
+        $this->assertEquals(
+            json_decode('{"jsonrpc": "2.0", "error": {"code": -32700, "message": "Parse error"}, "id": null}', true),
+            json_decode($server->execute(), true)
+        );
+    }
+
+    public function testInvalidRequest()
+    {
+        $server = new Server('{"jsonrpc": "2.0", "method": 1, "params": "bar", "id": 1}');
+
+        $this->assertEquals(
+            json_decode('{"jsonrpc": "2.0", "error": {"code": -32600, "message": "Invalid Request"}, "id": null}', true),
+            json_decode($server->execute(), true)
+        );
+    }
+
+    public function testInvalidResponse_MalformedCharacters()
+    {
+        $server = new Server('{"jsonrpc": "2.0", "method": "invalidresponse","id": 1}');
+
+        $invalidresponse = function() {
+            return pack("H*" ,'c32e');
+        };
+
+        $server->register('invalidresponse', $invalidresponse);
+
+        $this->assertEquals(
+            json_decode('{"jsonrpc": "2.0","id": 1, "error": {"code": -32603, "message": "Internal error","data": "Malformed UTF-8 characters, possibly incorrectly encoded"}}', true),
+            json_decode($server->execute(), true)
+        );
+    }
+
+    public function testBatchInvalidJson()
+    {
+        $server = new Server('[
+          {"jsonrpc": "2.0", "method": "sum", "params": [1,2,4], "id": "1"},
+          {"jsonrpc": "2.0", "method"
+        ]');
+
+        $this->assertEquals(
+            json_decode('{"jsonrpc": "2.0", "error": {"code": -32700, "message": "Parse error"}, "id": null}', true),
+            json_decode($server->execute(), true)
+        );
+    }
+
+    public function testBatchEmptyArray()
+    {
+        $server = new Server('[]');
+
+        $this->assertEquals(
+            json_decode('{"jsonrpc": "2.0", "error": {"code": -32600, "message": "Invalid Request"}, "id": null}', true),
+            json_decode($server->execute(), true)
+        );
+    }
+
+    public function testBatchNotEmptyButInvalid()
+    {
+        $server = new Server('[1]');
+
+        $this->assertEquals(
+            json_decode('[{"jsonrpc": "2.0", "error": {"code": -32700, "message": "Parse error"}, "id": null}]', true),
+            json_decode($server->execute(), true)
+        );
+    }
+
+    public function testBatchInvalid()
+    {
+        $server = new Server('[1,2,3]');
+
+        $this->assertEquals(
+            json_decode('[
+                {"jsonrpc": "2.0", "error": {"code": -32700, "message": "Parse error"}, "id": null},
+                {"jsonrpc": "2.0", "error": {"code": -32700, "message": "Parse error"}, "id": null},
+                {"jsonrpc": "2.0", "error": {"code": -32700, "message": "Parse error"}, "id": null}
+            ]', true),
+            json_decode($server->execute(), true)
+        );
+    }
+
+    public function testBatchOk()
+    {
+        $server = new Server('[
+            {"jsonrpc": "2.0", "method": "sum", "params": [1,2,4], "id": "1"},
+            {"jsonrpc": "2.0", "method": "notify_hello", "params": [7]},
+            {"jsonrpc": "2.0", "method": "subtract", "params": [42,23], "id": "2"},
+            {"foo": "boo"},
+            {"jsonrpc": "2.0", "method": "foo.get", "params": {"name": "myself"}, "id": "5"},
+            {"jsonrpc": "2.0", "method": "get_data", "id": "9"},
+            {"jsonrpc": "2.0", "method": "doSomething", "id": 10},
+            {"jsonrpc": "2.0", "method": "doStuff", "id": 15}
+        ]');
+
+        $server->register('sum', function($a, $b, $c) {
+            return $a + $b + $c;
+        });
+
+        $server->register('subtract', function($minuend, $subtrahend) {
+            return $minuend - $subtrahend;
+        });
+
+        $server->register('get_data', function() {
+            return array('hello', 5);
+        });
+
+        $server->attach(new C);
+
+        $server->bind('doStuff', 'C', 'doSomething');
+
+        $response = $server->execute();
+
+        $this->assertEquals(
+            json_decode('[
+                {"jsonrpc": "2.0", "result": 7, "id": "1"},
+                {"jsonrpc": "2.0", "result": 19, "id": "2"},
+                {"jsonrpc": "2.0", "error": {"code": -32600, "message": "Invalid Request"}, "id": null},
+                {"jsonrpc": "2.0", "error": {"code": -32601, "message": "Method not found"}, "id": "5"},
+                {"jsonrpc": "2.0", "result": ["hello", 5], "id": "9"},
+                {"jsonrpc": "2.0", "result": "something", "id": "10"},
+                {"jsonrpc": "2.0", "result": "something", "id": "15"}
+            ]', true),
+            json_decode($response, true)
+        );
+    }
+
+    public function testBatchNotifications()
+    {
+        $server = new Server('[
+            {"jsonrpc": "2.0", "method": "notify_sum", "params": [1,2,4]},
+            {"jsonrpc": "2.0", "method": "notify_hello", "params": [7]}
+        ]');
+
+        $server->register('notify_sum', function($a, $b, $c) {
+
+        });
+
+        $server->register('notify_hello', function($id) {
+
+        });
+
+        $this->assertEquals('', $server->execute());
+    }
+}
diff --git a/libs/jsonrpc/tests/ServerTest.php b/libs/jsonrpc/tests/ServerTest.php
new file mode 100644
index 00000000..87f37c2d
--- /dev/null
+++ b/libs/jsonrpc/tests/ServerTest.php
@@ -0,0 +1,258 @@
+<?php
+
+use JsonRPC\Exception\AccessDeniedException;
+use JsonRPC\Exception\AuthenticationFailureException;
+use JsonRPC\Exception\ResponseException;
+use JsonRPC\MiddlewareInterface;
+use JsonRPC\Response\HeaderMockTest;
+use JsonRPC\Server;
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+require_once __DIR__.'/Response/HeaderMockTest.php';
+
+class MyException extends Exception
+{
+
+}
+
+class DummyMiddleware implements MiddlewareInterface
+{
+    public function execute($username, $password, $procedureName)
+    {
+        throw new AuthenticationFailureException('Bad user');
+    }
+}
+
+class ServerTest extends HeaderMockTest
+{
+    private $payload = '{"jsonrpc": "2.0", "method": "sum", "params": [1,2,4], "id": "1"}';
+
+    public function testCustomAuthenticationHeader()
+    {
+        $env = array(
+            'HTTP_X_AUTH' => base64_encode('myuser:mypassword'),
+        );
+
+        $server = new Server($this->payload, $env);
+        $server->setAuthenticationHeader('X-Auth');
+        $this->assertEquals('myuser', $server->getUsername());
+        $this->assertEquals('mypassword', $server->getPassword());
+    }
+
+    public function testCustomAuthenticationHeaderWithEmptyValue()
+    {
+        $server = new Server($this->payload);
+        $server->setAuthenticationHeader('X-Auth');
+        $this->assertNull($server->getUsername());
+        $this->assertNull($server->getPassword());
+    }
+
+    public function testGetUsername()
+    {
+        $server = new Server($this->payload);
+        $this->assertNull($server->getUsername());
+
+        $server = new Server($this->payload, array('PHP_AUTH_USER' => 'username'));
+        $this->assertEquals('username', $server->getUsername());
+    }
+
+    public function testGetPassword()
+    {
+        $server = new Server($this->payload);
+        $this->assertNull($server->getPassword());
+
+        $server = new Server($this->payload, array('PHP_AUTH_PW' => 'password'));
+        $this->assertEquals('password', $server->getPassword());
+    }
+
+    public function testExecute()
+    {
+        $server = new Server($this->payload);
+        $server->getProcedureHandler()->withCallback('sum', function($a, $b, $c) {
+            return $a + $b + $c;
+        });
+
+        self::$functions
+            ->expects($this->once())
+            ->method('header')
+            ->with('Content-Type: application/json');
+
+        $this->assertEquals('{"jsonrpc":"2.0","result":7,"id":"1"}', $server->execute());
+    }
+
+    public function testExecuteRequestParserOverride()
+    {
+        $requestParser = $this->getMockBuilder('JsonRPC\Request\RequestParser')
+            ->getMock();
+
+        $requestParser->method('withPayload')->willReturn($requestParser);
+        $requestParser->method('withProcedureHandler')->willReturn($requestParser);
+        $requestParser->method('withMiddlewareHandler')->willReturn($requestParser);
+        $requestParser->method('withLocalException')->willReturn($requestParser);
+
+        $server = new Server($this->payload, array(), null, $requestParser);
+
+        $requestParser->expects($this->once())
+            ->method('parse');
+
+        $server->execute();
+    }
+
+    public function testExecuteBatchRequestParserOverride()
+    {
+        $batchRequestParser = $this->getMockBuilder('JsonRPC\Request\BatchRequestParser')
+            ->getMock();
+
+        $batchRequestParser->method('withPayload')->willReturn($batchRequestParser);
+        $batchRequestParser->method('withProcedureHandler')->willReturn($batchRequestParser);
+        $batchRequestParser->method('withMiddlewareHandler')->willReturn($batchRequestParser);
+        $batchRequestParser->method('withLocalException')->willReturn($batchRequestParser);
+
+        $server = new Server('["...", "..."]', array(), null, null, $batchRequestParser);
+
+        $batchRequestParser->expects($this->once())
+            ->method('parse');
+
+        $server->execute();
+    }
+
+    public function testExecuteResponseBuilderOverride()
+    {
+        $responseBuilder = $this->getMockBuilder('JsonRPC\Response\ResponseBuilder')
+            ->getMock();
+
+        $responseBuilder->expects($this->once())
+            ->method('sendHeaders');
+
+        $server = new Server($this->payload, array(), $responseBuilder);
+        $server->execute();
+    }
+
+    public function testExecuteProcedureHandlerOverride()
+    {
+        $batchRequestParser = $this->getMockBuilder('JsonRPC\Request\BatchRequestParser')
+            ->getMock();
+
+        $procedureHandler = $this->getMockBuilder('JsonRPC\ProcedureHandler')
+            ->getMock();
+
+        $batchRequestParser->method('withPayload')->willReturn($batchRequestParser);
+        $batchRequestParser->method('withProcedureHandler')->willReturn($batchRequestParser);
+        $batchRequestParser->method('withMiddlewareHandler')->willReturn($batchRequestParser);
+        $batchRequestParser->method('withLocalException')->willReturn($batchRequestParser);
+
+        $server = new Server('["...", "..."]', array(), null, null, $batchRequestParser, $procedureHandler);
+
+        $batchRequestParser->expects($this->once())
+            ->method('parse');
+
+        $batchRequestParser->expects($this->once())
+            ->method('withProcedureHandler')
+            ->with($this->identicalTo($procedureHandler));
+
+        $server->execute();
+    }
+
+    public function testWhenCallbackRaiseForbiddenException()
+    {
+        $server = new Server($this->payload);
+        $server->getProcedureHandler()->withCallback('sum', function($a, $b, $c) {
+            throw new AccessDeniedException();
+        });
+
+        self::$functions
+            ->expects($this->at(0))
+            ->method('header')
+            ->with('HTTP/1.0 403 Forbidden');
+
+        self::$functions
+            ->expects($this->at(1))
+            ->method('header')
+            ->with('Content-Type: application/json');
+
+        $this->assertEquals('{"jsonrpc":"2.0","error":{"code":403,"message":"Forbidden"},"id":null}', $server->execute());
+    }
+
+    public function testWhenCallbackRaiseUnauthorizedException()
+    {
+        $server = new Server($this->payload);
+        $server->getProcedureHandler()->withCallback('sum', function($a, $b, $c) {
+            throw new AuthenticationFailureException();
+        });
+
+        self::$functions
+            ->expects($this->at(0))
+            ->method('header')
+            ->with('HTTP/1.0 401 Unauthorized');
+
+        self::$functions
+            ->expects($this->at(1))
+            ->method('header')
+            ->with('Content-Type: application/json');
+
+        $this->assertEquals('{"jsonrpc":"2.0","error":{"code":401,"message":"Unauthorized"},"id":null}', $server->execute());
+    }
+
+    public function testWhenMiddlewareRaiseUnauthorizedException()
+    {
+        $server = new Server($this->payload);
+        $server->getMiddlewareHandler()->withMiddleware(new DummyMiddleware());
+        $server->getProcedureHandler()->withCallback('sum', function($a, $b) {
+            return $a + $b;
+        });
+
+        self::$functions
+            ->expects($this->at(0))
+            ->method('header')
+            ->with('HTTP/1.0 401 Unauthorized');
+
+        self::$functions
+            ->expects($this->at(1))
+            ->method('header')
+            ->with('Content-Type: application/json');
+
+        $this->assertEquals('{"jsonrpc":"2.0","error":{"code":401,"message":"Unauthorized"},"id":null}', $server->execute());
+    }
+
+    public function testFilterRelayExceptions()
+    {
+        $server = new Server($this->payload);
+        $server->withLocalException('MyException');
+        $server->getProcedureHandler()->withCallback('sum', function($a, $b, $c) {
+            throw new MyException('test');
+        });
+
+        $this->setExpectedException('MyException');
+        $server->execute();
+    }
+
+    public function testCustomExceptionAreRelayedToClient()
+    {
+        $server = new Server($this->payload);
+        $server->getProcedureHandler()->withCallback('sum', function($a, $b, $c) {
+            throw new MyException('test');
+        });
+
+        self::$functions
+            ->expects($this->once())
+            ->method('header')
+            ->with('Content-Type: application/json');
+
+        $this->assertEquals('{"jsonrpc":"2.0","error":{"code":0,"message":"test"},"id":"1"}', $server->execute());
+    }
+
+    public function testCustomResponseException()
+    {
+        $server = new Server($this->payload);
+        $server->getProcedureHandler()->withCallback('sum', function($a, $b, $c) {
+            throw new ResponseException('test', 123, null, 'more info');
+        });
+
+        self::$functions
+            ->expects($this->once())
+            ->method('header')
+            ->with('Content-Type: application/json');
+
+        $this->assertEquals('{"jsonrpc":"2.0","error":{"code":123,"message":"test","data":"more info"},"id":"1"}', $server->execute());
+    }
+}
diff --git a/libs/jsonrpc/tests/Validator/HostValidatorTest.php b/libs/jsonrpc/tests/Validator/HostValidatorTest.php
new file mode 100644
index 00000000..a5fed7e0
--- /dev/null
+++ b/libs/jsonrpc/tests/Validator/HostValidatorTest.php
@@ -0,0 +1,32 @@
+<?php
+
+use JsonRPC\Validator\HostValidator;
+
+require_once __DIR__.'/../../../../vendor/autoload.php';
+
+class HostValidatorTest extends PHPUnit_Framework_TestCase
+{
+    public function testWithEmptyHosts()
+    {
+        $this->assertNull(HostValidator::validate(array(), '127.0.0.1', '127.0.0.1'));
+    }
+
+    public function testWithValidHosts()
+    {
+        $this->assertNull(HostValidator::validate(array('127.0.0.1'), '127.0.0.1', '127.0.0.1'));
+    }
+
+    public function testWithValidNetwork()
+    {
+        $this->assertNull(HostValidator::validate(array('192.168.10.1/24'), '192.168.10.1'),'test ip match');
+        $this->assertNull(HostValidator::validate(array('192.168.10.1/24'), '192.168.10.250'),'test ip match');
+        $this->setExpectedException('\JsonRPC\Exception\AccessDeniedException');
+        HostValidator::validate(array('192.168.10.1/24'), '192.168.11.1');
+    }
+
+    public function testWithNotAuthorizedHosts()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\AccessDeniedException');
+        HostValidator::validate(array('192.168.1.1'), '127.0.0.1', '127.0.0.1');
+    }
+}
diff --git a/libs/jsonrpc/tests/Validator/JsonEncodingValidatorTest.php b/libs/jsonrpc/tests/Validator/JsonEncodingValidatorTest.php
new file mode 100644
index 00000000..a1b2b80e
--- /dev/null
+++ b/libs/jsonrpc/tests/Validator/JsonEncodingValidatorTest.php
@@ -0,0 +1,22 @@
+<?php
+
+use JsonRPC\Validator\JsonEncodingValidator;
+
+require_once __DIR__.'/../../../../vendor/autoload.php';
+
+class JsonEncodingValidatorTest extends PHPUnit_Framework_TestCase
+{
+    public function testWithValidJson()
+    {
+        json_encode('{"foo": "bar"}');
+        $this->assertNull(JsonEncodingValidator::validate());
+    }
+
+    public function testWithJsonError()
+    {
+        json_encode("\xB1\x31");
+
+        $this->setExpectedException('\JsonRPC\Exception\ResponseEncodingFailureException');
+        JsonEncodingValidator::validate();
+    }
+}
diff --git a/libs/jsonrpc/tests/Validator/JsonFormatValidatorTest.php b/libs/jsonrpc/tests/Validator/JsonFormatValidatorTest.php
new file mode 100644
index 00000000..a838ada9
--- /dev/null
+++ b/libs/jsonrpc/tests/Validator/JsonFormatValidatorTest.php
@@ -0,0 +1,19 @@
+<?php
+
+use JsonRPC\Validator\JsonFormatValidator;
+
+require_once __DIR__.'/../../../../vendor/autoload.php';
+
+class JsonFormatValidatorTest extends PHPUnit_Framework_TestCase
+{
+    public function testJsonParsedCorrectly()
+    {
+        $this->assertNull(JsonFormatValidator::validate(array('foobar')));
+    }
+
+    public function testJsonNotParsedCorrectly()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\InvalidJsonFormatException');
+        JsonFormatValidator::validate('');
+    }
+}
diff --git a/libs/jsonrpc/tests/Validator/RpcFormatValidatorTest.php b/libs/jsonrpc/tests/Validator/RpcFormatValidatorTest.php
new file mode 100644
index 00000000..3e6ba8bc
--- /dev/null
+++ b/libs/jsonrpc/tests/Validator/RpcFormatValidatorTest.php
@@ -0,0 +1,48 @@
+<?php
+
+use JsonRPC\Validator\RpcFormatValidator;
+
+require_once __DIR__.'/../../../../vendor/autoload.php';
+
+class RpcFormatValidatorTest extends PHPUnit_Framework_TestCase
+{
+    public function testWithMinimumRequirement()
+    {
+        $this->assertNull(RpcFormatValidator::validate(array('jsonrpc' => '2.0', 'method' => 'foobar')));
+    }
+
+    public function testWithNoVersion()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\InvalidJsonRpcFormatException');
+        RpcFormatValidator::validate(array('method' => 'foobar'));
+    }
+
+    public function testWithNoMethod()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\InvalidJsonRpcFormatException');
+        RpcFormatValidator::validate(array('jsonrpc' => '2.0'));
+    }
+
+    public function testWithMethodNotString()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\InvalidJsonRpcFormatException');
+        RpcFormatValidator::validate(array('jsonrpc' => '2.0', 'method' => array()));
+    }
+
+    public function testWithBadVersion()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\InvalidJsonRpcFormatException');
+        RpcFormatValidator::validate(array('jsonrpc' => '1.0', 'method' => 'abc'));
+    }
+
+    public function testWithBadParams()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\InvalidJsonRpcFormatException');
+        RpcFormatValidator::validate(array('jsonrpc' => '2.0', 'method' => 'abc', 'params' => 'foobar'));
+    }
+
+    public function testWithParams()
+    {
+        $this->assertNull(RpcFormatValidator::validate(array('jsonrpc' => '2.0', 'method' => 'abc', 'params' => array(1, 2))));
+    }
+}
diff --git a/libs/jsonrpc/tests/Validator/UserValidatorTest.php b/libs/jsonrpc/tests/Validator/UserValidatorTest.php
new file mode 100644
index 00000000..e514c105
--- /dev/null
+++ b/libs/jsonrpc/tests/Validator/UserValidatorTest.php
@@ -0,0 +1,24 @@
+<?php
+
+use JsonRPC\Validator\UserValidator;
+
+require_once __DIR__.'/../../../../vendor/autoload.php';
+
+class UserValidatorTest extends PHPUnit_Framework_TestCase
+{
+    public function testWithEmptyHosts()
+    {
+        $this->assertNull(UserValidator::validate(array(), 'user', 'pass'));
+    }
+
+    public function testWithValidHosts()
+    {
+        $this->assertNull(UserValidator::validate(array('user' => 'pass'), 'user', 'pass'));
+    }
+
+    public function testWithNotAuthorizedHosts()
+    {
+        $this->setExpectedException('\JsonRPC\Exception\AuthenticationFailureException');
+        UserValidator::validate(array('user' => 'pass'), 'user', 'wrong password');
+    }
+}
diff --git a/libs/phpqrcode/LICENSE b/libs/phpqrcode/LICENSE
new file mode 100755
index 00000000..18833032
--- /dev/null
+++ b/libs/phpqrcode/LICENSE
@@ -0,0 +1,165 @@
+                  GNU LESSER GENERAL PUBLIC LICENSE

+                       Version 3, 29 June 2007

+

+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>

+ Everyone is permitted to copy and distribute verbatim copies

+ of this license document, but changing it is not allowed.

+

+

+  This version of the GNU Lesser General Public License incorporates

+the terms and conditions of version 3 of the GNU General Public

+License, supplemented by the additional permissions listed below.

+

+  0. Additional Definitions.

+

+  As used herein, "this License" refers to version 3 of the GNU Lesser

+General Public License, and the "GNU GPL" refers to version 3 of the GNU

+General Public License.

+

+  "The Library" refers to a covered work governed by this License,

+other than an Application or a Combined Work as defined below.

+

+  An "Application" is any work that makes use of an interface provided

+by the Library, but which is not otherwise based on the Library.

+Defining a subclass of a class defined by the Library is deemed a mode

+of using an interface provided by the Library.

+

+  A "Combined Work" is a work produced by combining or linking an

+Application with the Library.  The particular version of the Library

+with which the Combined Work was made is also called the "Linked

+Version".

+

+  The "Minimal Corresponding Source" for a Combined Work means the

+Corresponding Source for the Combined Work, excluding any source code

+for portions of the Combined Work that, considered in isolation, are

+based on the Application, and not on the Linked Version.

+

+  The "Corresponding Application Code" for a Combined Work means the

+object code and/or source code for the Application, including any data

+and utility programs needed for reproducing the Combined Work from the

+Application, but excluding the System Libraries of the Combined Work.

+

+  1. Exception to Section 3 of the GNU GPL.

+

+  You may convey a covered work under sections 3 and 4 of this License

+without being bound by section 3 of the GNU GPL.

+

+  2. Conveying Modified Versions.

+

+  If you modify a copy of the Library, and, in your modifications, a

+facility refers to a function or data to be supplied by an Application

+that uses the facility (other than as an argument passed when the

+facility is invoked), then you may convey a copy of the modified

+version:

+

+   a) under this License, provided that you make a good faith effort to

+   ensure that, in the event an Application does not supply the

+   function or data, the facility still operates, and performs

+   whatever part of its purpose remains meaningful, or

+

+   b) under the GNU GPL, with none of the additional permissions of

+   this License applicable to that copy.

+

+  3. Object Code Incorporating Material from Library Header Files.

+

+  The object code form of an Application may incorporate material from

+a header file that is part of the Library.  You may convey such object

+code under terms of your choice, provided that, if the incorporated

+material is not limited to numerical parameters, data structure

+layouts and accessors, or small macros, inline functions and templates

+(ten or fewer lines in length), you do both of the following:

+

+   a) Give prominent notice with each copy of the object code that the

+   Library is used in it and that the Library and its use are

+   covered by this License.

+

+   b) Accompany the object code with a copy of the GNU GPL and this license

+   document.

+

+  4. Combined Works.

+

+  You may convey a Combined Work under terms of your choice that,

+taken together, effectively do not restrict modification of the

+portions of the Library contained in the Combined Work and reverse

+engineering for debugging such modifications, if you also do each of

+the following:

+

+   a) Give prominent notice with each copy of the Combined Work that

+   the Library is used in it and that the Library and its use are

+   covered by this License.

+

+   b) Accompany the Combined Work with a copy of the GNU GPL and this license

+   document.

+

+   c) For a Combined Work that displays copyright notices during

+   execution, include the copyright notice for the Library among

+   these notices, as well as a reference directing the user to the

+   copies of the GNU GPL and this license document.

+

+   d) Do one of the following:

+

+       0) Convey the Minimal Corresponding Source under the terms of this

+       License, and the Corresponding Application Code in a form

+       suitable for, and under terms that permit, the user to

+       recombine or relink the Application with a modified version of

+       the Linked Version to produce a modified Combined Work, in the

+       manner specified by section 6 of the GNU GPL for conveying

+       Corresponding Source.

+

+       1) Use a suitable shared library mechanism for linking with the

+       Library.  A suitable mechanism is one that (a) uses at run time

+       a copy of the Library already present on the user's computer

+       system, and (b) will operate properly with a modified version

+       of the Library that is interface-compatible with the Linked

+       Version.

+

+   e) Provide Installation Information, but only if you would otherwise

+   be required to provide such information under section 6 of the

+   GNU GPL, and only to the extent that such information is

+   necessary to install and execute a modified version of the

+   Combined Work produced by recombining or relinking the

+   Application with a modified version of the Linked Version. (If

+   you use option 4d0, the Installation Information must accompany

+   the Minimal Corresponding Source and Corresponding Application

+   Code. If you use option 4d1, you must provide the Installation

+   Information in the manner specified by section 6 of the GNU GPL

+   for conveying Corresponding Source.)

+

+  5. Combined Libraries.

+

+  You may place library facilities that are a work based on the

+Library side by side in a single library together with other library

+facilities that are not Applications and are not covered by this

+License, and convey such a combined library under terms of your

+choice, if you do both of the following:

+

+   a) Accompany the combined library with a copy of the same work based

+   on the Library, uncombined with any other library facilities,

+   conveyed under the terms of this License.

+

+   b) Give prominent notice with the combined library that part of it

+   is a work based on the Library, and explaining where to find the

+   accompanying uncombined form of the same work.

+

+  6. Revised Versions of the GNU Lesser General Public License.

+

+  The Free Software Foundation may publish revised and/or new versions

+of the GNU Lesser General Public License from time to time. Such new

+versions will be similar in spirit to the present version, but may

+differ in detail to address new problems or concerns.

+

+  Each version is given a distinguishing version number. If the

+Library as you received it specifies that a certain numbered version

+of the GNU Lesser General Public License "or any later version"

+applies to it, you have the option of following the terms and

+conditions either of that published version or of any later version

+published by the Free Software Foundation. If the Library as you

+received it does not specify a version number of the GNU Lesser

+General Public License, you may choose any version of the GNU Lesser

+General Public License ever published by the Free Software Foundation.

+

+  If the Library as you received it specifies that a proxy can decide

+whether future versions of the GNU Lesser General Public License shall

+apply, that proxy's public statement of acceptance of any version is

+permanent authorization for you to choose that version for the

+Library.

diff --git a/libs/phpqrcode/cache/frame_1.dat b/libs/phpqrcode/cache/frame_1.dat
new file mode 100755
index 00000000..be28feac
--- /dev/null
+++ b/libs/phpqrcode/cache/frame_1.dat
@@ -0,0 +1,2 @@
+xڝ��
� E9�u��`�"PńC�牗T!0$
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new file mode 100755
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new file mode 100755
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new file mode 100755
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new file mode 100755
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diff --git a/libs/phpqrcode/cache/mask_7/mask_49_7.dat b/libs/phpqrcode/cache/mask_7/mask_49_7.dat
new file mode 100755
index 00000000..be5dce8b
--- /dev/null
+++ b/libs/phpqrcode/cache/mask_7/mask_49_7.dat
@@ -0,0 +1 @@
+x��V��0��k���h�C-X.���<�h6̋3���,B
�Ԕ�,�@�ϐ�d5$K�"T|p�%9"�yp�,���=<��m����ԉ!��?���D�W"��(��A�-�\-
J\�{0p�l�WW
]���4��?4h=
Z_��d+�g(�*�*�+붵
(���
\ No newline at end of file
diff --git a/libs/phpqrcode/cache/mask_7/mask_53_7.dat b/libs/phpqrcode/cache/mask_7/mask_53_7.dat
new file mode 100755
index 00000000..7028ef6d
--- /dev/null
+++ b/libs/phpqrcode/cache/mask_7/mask_53_7.dat
@@ -0,0 +1 @@
+x��K� D�s���&�R�k�i�&,H)�tD�j�=����Qa���P"d�s1ZyC�|hey��Cv�aH��7��+�O��u��Q�sZtb����7�v�����h�V���~���1#�~�[�f�����fHkZ�Jt���mZ��6���s����w�r�&C�߶f
\ No newline at end of file
diff --git a/libs/phpqrcode/cache/mask_7/mask_57_7.dat b/libs/phpqrcode/cache/mask_7/mask_57_7.dat
new file mode 100755
index 00000000..ee3107a3
--- /dev/null
+++ b/libs/phpqrcode/cache/mask_7/mask_57_7.dat
@@ -0,0 +1 @@
+x��A�0������3&��H)Kb��&�q�֞�[-����֌��9�r��Ys�.��i�Ӿ`�����~���G��{c�i�Ղ�\Y<�.�|���2��۟�2� �QQ[[�^N��88�l����[}[�Pl?g+o*ϖ�4W���1�	� �33��[�\Gos�bk�m�m��m��^��h�
\ No newline at end of file
diff --git a/libs/phpqrcode/cache/mask_7/mask_61_7.dat b/libs/phpqrcode/cache/mask_7/mask_61_7.dat
new file mode 100755
index 00000000..76f8d727
--- /dev/null
+++ b/libs/phpqrcode/cache/mask_7/mask_61_7.dat
@@ -0,0 +1,2 @@
+x��K
+� D�s����+-�*5�m��c�aT�1�9��Y�쌧�L9�糶����s�//i���\��b�����ī���-"^�D�H-i�;bnA���7�f�et�7ٷỵE:r�<4�6�(�u�y{K3o�"���|a��o�?ᜟ��竟��p�9���j~N�ƛ��s����TY���u
\ No newline at end of file
diff --git a/libs/phpqrcode/cache/mask_7/mask_65_7.dat b/libs/phpqrcode/cache/mask_7/mask_65_7.dat
new file mode 100755
index 00000000..d8b92062
--- /dev/null
+++ b/libs/phpqrcode/cache/mask_7/mask_65_7.dat
@@ -0,0 +1 @@
+x��A� �����I�*�6^L!酰��i)mT�T]�VW\�9�e@�4Ku^�#N%:�,��mY��JN��9���ඩ�vA�2���Ϝ�H�"Y�����+?`�BXD�BX̽{���.��w���d�,~΂k�,�^�bQ�~�.��\�w����^�ρ��OY��E�JmX�
��"%
\ No newline at end of file
diff --git a/libs/phpqrcode/cache/mask_7/mask_69_7.dat b/libs/phpqrcode/cache/mask_7/mask_69_7.dat
new file mode 100755
index 00000000..c2db0204
--- /dev/null
+++ b/libs/phpqrcode/cache/mask_7/mask_69_7.dat
diff --git a/libs/phpqrcode/cache/mask_7/mask_73_7.dat b/libs/phpqrcode/cache/mask_7/mask_73_7.dat
new file mode 100755
index 00000000..f414e4a5
--- /dev/null
+++ b/libs/phpqrcode/cache/mask_7/mask_73_7.dat
diff --git a/libs/phpqrcode/cache/mask_7/mask_77_7.dat b/libs/phpqrcode/cache/mask_7/mask_77_7.dat
new file mode 100755
index 00000000..3e52bfd3
--- /dev/null
+++ b/libs/phpqrcode/cache/mask_7/mask_77_7.dat
diff --git a/libs/phpqrcode/cache/mask_7/mask_81_7.dat b/libs/phpqrcode/cache/mask_7/mask_81_7.dat
new file mode 100755
index 00000000..78e08dfc
--- /dev/null
+++ b/libs/phpqrcode/cache/mask_7/mask_81_7.dat
@@ -0,0 +1 @@
+x���� D��5��?�l�"͊ݕ�u4��a�>ukv
o�40���T�%9���6����U5�*s�I{`����_�>S?�}(:y�T�l�{G&E\��6��}"A��X��XϬ����<�mwx�f��G�<k�r�U�eεεX��X���Z~�s�;\��Z�3�|y�	/�w���p˯������U�[~�}O��o�`m�s�ݑ�)~,�
\ No newline at end of file
diff --git a/libs/phpqrcode/cache/mask_7/mask_85_7.dat b/libs/phpqrcode/cache/mask_7/mask_85_7.dat
new file mode 100755
index 00000000..a53824ae
--- /dev/null
+++ b/libs/phpqrcode/cache/mask_7/mask_85_7.dat
diff --git a/libs/phpqrcode/cache/mask_7/mask_89_7.dat b/libs/phpqrcode/cache/mask_7/mask_89_7.dat
new file mode 100755
index 00000000..32934a44
--- /dev/null
+++ b/libs/phpqrcode/cache/mask_7/mask_89_7.dat
diff --git a/libs/phpqrcode/cache/mask_7/mask_93_7.dat b/libs/phpqrcode/cache/mask_7/mask_93_7.dat
new file mode 100755
index 00000000..1955f6b7
--- /dev/null
+++ b/libs/phpqrcode/cache/mask_7/mask_93_7.dat
diff --git a/libs/phpqrcode/cache/mask_7/mask_97_7.dat b/libs/phpqrcode/cache/mask_7/mask_97_7.dat
new file mode 100755
index 00000000..b277368b
--- /dev/null
+++ b/libs/phpqrcode/cache/mask_7/mask_97_7.dat
@@ -0,0 +1,2 @@
+x����0�������ܲD[���V.K��I�`��'��sx����y���$�x�x�"���=O^&p�b���Yʬ�$�K�ݣ����8K����eÌ�
��	���3:$bI,�%�$���Yb襶
+M)�T�
%q����綦E��X}jl�T�T��KbI,�%��,���_e[%����V]R]�;N,�%�$���%V�@`��%pa�m���(}�_�%�%�۸������4�='u)ai�.;M��>
\ No newline at end of file
diff --git a/libs/phpqrcode/lib/PHPQRCode.php b/libs/phpqrcode/lib/PHPQRCode.php
new file mode 100644
index 00000000..e96c5e3d
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode.php
@@ -0,0 +1,42 @@
+<?php
+/**
+ * PHPQRCode.php
+ *
+ * Created by arielferrandini
+ */
+$QR_BASEDIR = dirname(__FILE__).DIRECTORY_SEPARATOR;
+
+// Required libs
+
+/*
+ * PHP QR Code encoder
+ *
+ * Config file, feel free to modify
+ */
+
+define('QR_CACHEABLE', true);                                                               // use cache - more disk reads but less CPU power, masks and format templates are stored there
+define('QR_CACHE_DIR', dirname(__FILE__).DIRECTORY_SEPARATOR.'cache'.DIRECTORY_SEPARATOR);  // used when QR_CACHEABLE === true
+define('QR_LOG_DIR', dirname(__FILE__).DIRECTORY_SEPARATOR);                                // default error logs dir
+
+define('QR_FIND_BEST_MASK', true);                                                          // if true, estimates best mask (spec. default, but extremally slow; set to false to significant performance boost but (propably) worst quality code
+define('QR_FIND_FROM_RANDOM', false);                                                       // if false, checks all masks available, otherwise value tells count of masks need to be checked, mask id are got randomly
+define('QR_DEFAULT_MASK', 2);                                                               // when QR_FIND_BEST_MASK === false
+
+define('QR_PNG_MAXIMUM_SIZE',  1024);
+
+
+// Supported output formats
+
+define('QR_FORMAT_TEXT', 0);
+define('QR_FORMAT_PNG',  1);
+
+/** PHPQRCode root directory */
+if (!defined('PHPQRCODE_ROOT')) {
+	define('PHPQRCODE_ROOT', dirname(__FILE__) . '/');
+	require(PHPQRCODE_ROOT . 'PHPQRCode/Autoloader.php');
+}
+
+class PHPQRCode
+{
+
+}
diff --git a/libs/phpqrcode/lib/PHPQRCode/Autoloader.php b/libs/phpqrcode/lib/PHPQRCode/Autoloader.php
new file mode 100755
index 00000000..6fe2bb2f
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/Autoloader.php
@@ -0,0 +1,48 @@
+<?php
+/**
+ * Autoloader
+ *
+ * Copyright (c) 2006 - 2011 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPQRCode
+ * @package    PHPQRCode
+ */
+
+namespace PHPQRCode;
+
+class Autoloader
+{
+	public static function register()
+    {
+		spl_autoload_register(array(new self, 'autoload'));
+    }
+
+	public static function autoload($class)
+    {
+		if ((class_exists($class)) || (strpos($class, 'PHPQRCode') !== 0)) {
+			return false;
+		}
+
+		$file =	dirname(__FILE__) . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR
+            . str_replace(array('\\', "\0"), array('/', ''), $class).'.php';
+
+		if (is_file($file)) {
+			require $file;
+		}
+    }
+
+}
\ No newline at end of file
diff --git a/libs/phpqrcode/lib/PHPQRCode/Constants.php b/libs/phpqrcode/lib/PHPQRCode/Constants.php
new file mode 100644
index 00000000..49fc6434
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/Constants.php
@@ -0,0 +1,58 @@
+<?php
+/**
+ * Constants.php
+ *
+ * Created by arielferrandini
+ */
+
+namespace PHPQRCode;
+
+class Constants
+{
+    const QR_CACHEABLE = false;
+    const QR_CACHE_DIR = ''; //dirname(__FILE__) . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'cache' . DIRECTORY_SEPARATOR;
+    const QR_LOG_DIR   = '/tmp/qrcode_log/';
+
+    const QR_FIND_BEST_MASK = true;
+    const QR_FIND_FROM_RANDOM = false;
+    const QR_DEFAULT_MASK = 2;
+
+    const QR_PNG_MAXIMUM_SIZE =  1024;
+
+    // Encoding modes
+	const QR_MODE_NUL = -1;
+	const QR_MODE_NUM = 0;
+	const QR_MODE_AN = 1;
+	const QR_MODE_8 = 2;
+	const QR_MODE_KANJI = 3;
+	const QR_MODE_STRUCTURE = 4;
+
+	// Levels of error correction.
+	const QR_ECLEVEL_L = 0;
+	const QR_ECLEVEL_M = 1;
+	const QR_ECLEVEL_Q = 2;
+	const QR_ECLEVEL_H = 3;
+
+	// Supported output formats
+	const QR_FORMAT_TEXT = 0;
+	const QR_FORMAT_PNG =  1;
+
+    const QR_IMAGE =  true;
+
+    const STRUCTURE_HEADER_BITS =  20;
+    const MAX_STRUCTURED_SYMBOLS = 16;
+
+    // Maks
+    const N1 = 3;
+	const N2 = 3;
+	const N3 = 40;
+	const N4 = 10;
+
+    const QRSPEC_VERSION_MAX = 40;
+    const QRSPEC_WIDTH_MAX =   177;
+
+    const QRCAP_WIDTH =        0;
+    const QRCAP_WORDS =        1;
+    const QRCAP_REMINDER =     2;
+    const QRCAP_EC =           3;
+}
diff --git a/libs/phpqrcode/lib/PHPQRCode/FrameFiller.php b/libs/phpqrcode/lib/PHPQRCode/FrameFiller.php
new file mode 100644
index 00000000..02e94e3f
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/FrameFiller.php
@@ -0,0 +1,96 @@
+<?php
+/**
+ * FrameFiller.php
+ *
+ * Created by arielferrandini
+ */
+
+namespace PHPQRCode;
+
+class FrameFiller {
+
+    public $width;
+    public $frame;
+    public $x;
+    public $y;
+    public $dir;
+    public $bit;
+
+    //----------------------------------------------------------------------
+    public function __construct($width, &$frame)
+    {
+        $this->width = $width;
+        $this->frame = $frame;
+        $this->x = $width - 1;
+        $this->y = $width - 1;
+        $this->dir = -1;
+        $this->bit = -1;
+    }
+
+    //----------------------------------------------------------------------
+    public function setFrameAt($at, $val)
+    {
+        $this->frame[$at['y']][$at['x']] = chr($val);
+    }
+
+    //----------------------------------------------------------------------
+    public function getFrameAt($at)
+    {
+        return ord($this->frame[$at['y']][$at['x']]);
+    }
+
+    //----------------------------------------------------------------------
+    public function next()
+    {
+        do {
+
+            if($this->bit == -1) {
+                $this->bit = 0;
+                return array('x'=>$this->x, 'y'=>$this->y);
+            }
+
+            $x = $this->x;
+            $y = $this->y;
+            $w = $this->width;
+
+            if($this->bit == 0) {
+                $x--;
+                $this->bit++;
+            } else {
+                $x++;
+                $y += $this->dir;
+                $this->bit--;
+            }
+
+            if($this->dir < 0) {
+                if($y < 0) {
+                    $y = 0;
+                    $x -= 2;
+                    $this->dir = 1;
+                    if($x == 6) {
+                        $x--;
+                        $y = 9;
+                    }
+                }
+            } else {
+                if($y == $w) {
+                    $y = $w - 1;
+                    $x -= 2;
+                    $this->dir = -1;
+                    if($x == 6) {
+                        $x--;
+                        $y -= 8;
+                    }
+                }
+            }
+            if($x < 0 || $y < 0) return null;
+
+            $this->x = $x;
+            $this->y = $y;
+
+        } while(ord($this->frame[$y][$x]) & 0x80);
+
+        return array('x'=>$x, 'y'=>$y);
+    }
+
+} ;
\ No newline at end of file
diff --git a/libs/phpqrcode/lib/PHPQRCode/QRbitstream.php b/libs/phpqrcode/lib/PHPQRCode/QRbitstream.php
new file mode 100755
index 00000000..93606f13
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/QRbitstream.php
@@ -0,0 +1,182 @@
+<?php

+/*

+ * PHP QR Code encoder

+ *

+ * Bitstream class

+ *

+ * Based on libqrencode C library distributed under LGPL 2.1

+ * Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@megaui.net>

+ *

+ * PHP QR Code is distributed under LGPL 3

+ * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>

+ *

+ * This library is free software; you can redistribute it and/or

+ * modify it under the terms of the GNU Lesser General Public

+ * License as published by the Free Software Foundation; either

+ * version 3 of the License, or any later version.

+ *

+ * This library is distributed in the hope that it will be useful,

+ * but WITHOUT ANY WARRANTY; without even the implied warranty of

+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

+ * Lesser General Public License for more details.

+ *

+ * You should have received a copy of the GNU Lesser General Public

+ * License along with this library; if not, write to the Free Software

+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

+ */

+

+namespace PHPQRCode;

+

+class QRbitstream {

+

+    public $data = array();

+

+    //----------------------------------------------------------------------

+    public function size()

+    {

+        return count($this->data);

+    }

+

+    //----------------------------------------------------------------------

+    public function allocate($setLength)

+    {

+        $this->data = array_fill(0, $setLength, 0);

+        return 0;

+    }

+

+    //----------------------------------------------------------------------

+    public static function newFromNum($bits, $num)

+    {

+        $bstream = new QRbitstream();

+        $bstream->allocate($bits);

+

+        $mask = 1 << ($bits - 1);

+        for($i=0; $i<$bits; $i++) {

+            if($num & $mask) {

+                $bstream->data[$i] = 1;

+            } else {

+                $bstream->data[$i] = 0;

+            }

+            $mask = $mask >> 1;

+        }

+

+        return $bstream;

+    }

+

+    //----------------------------------------------------------------------

+    public static function newFromBytes($size, $data)

+    {

+        $bstream = new QRbitstream();

+        $bstream->allocate($size * 8);

+        $p=0;

+

+        for($i=0; $i<$size; $i++) {

+            $mask = 0x80;

+            for($j=0; $j<8; $j++) {

+                if($data[$i] & $mask) {

+                    $bstream->data[$p] = 1;

+                } else {

+                    $bstream->data[$p] = 0;

+                }

+                $p++;

+                $mask = $mask >> 1;

+            }

+        }

+

+        return $bstream;

+    }

+

+    //----------------------------------------------------------------------

+    public function append(QRbitstream $arg)

+    {

+        if (is_null($arg)) {

+            return -1;

+        }

+

+        if($arg->size() == 0) {

+            return 0;

+        }

+

+        if($this->size() == 0) {

+            $this->data = $arg->data;

+            return 0;

+        }

+

+        $this->data = array_values(array_merge($this->data, $arg->data));

+

+        return 0;

+    }

+

+    //----------------------------------------------------------------------

+    public function appendNum($bits, $num)

+    {

+        if ($bits == 0)

+            return 0;

+

+        $b = QRbitstream::newFromNum($bits, $num);

+

+        if(is_null($b))

+            return -1;

+

+        $ret = $this->append($b);

+        unset($b);

+

+        return $ret;

+    }

+

+    //----------------------------------------------------------------------

+    public function appendBytes($size, $data)

+    {

+        if ($size == 0)

+            return 0;

+

+        $b = QRbitstream::newFromBytes($size, $data);

+

+        if(is_null($b))

+            return -1;

+

+        $ret = $this->append($b);

+        unset($b);

+

+        return $ret;

+    }

+

+    //----------------------------------------------------------------------

+    public function toByte()

+    {

+

+        $size = $this->size();

+

+        if($size == 0) {

+            return array();

+        }

+

+        $data = array_fill(0, (int)(($size + 7) / 8), 0);

+        $bytes = (int)($size / 8);

+

+        $p = 0;

+

+        for($i=0; $i<$bytes; $i++) {

+            $v = 0;

+            for($j=0; $j<8; $j++) {

+                $v = $v << 1;

+                $v |= $this->data[$p];

+                $p++;

+            }

+            $data[$i] = $v;

+        }

+

+        if($size & 7) {

+            $v = 0;

+            for($j=0; $j<($size & 7); $j++) {

+                $v = $v << 1;

+                $v |= $this->data[$p];

+                $p++;

+            }

+            $data[$bytes] = $v;

+        }

+

+        return $data;

+    }

+

+}
\ No newline at end of file
diff --git a/libs/phpqrcode/lib/PHPQRCode/QRcode.php b/libs/phpqrcode/lib/PHPQRCode/QRcode.php
new file mode 100644
index 00000000..08b60243
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/QRcode.php
@@ -0,0 +1,158 @@
+<?php
+/**
+ * QRcode.php
+ *
+ * Created by arielferrandini
+ */
+
+namespace PHPQRCode;
+
+use Exception;
+
+class QRcode {
+
+    public $version;
+    public $width;
+    public $data;
+
+    //----------------------------------------------------------------------
+    public function encodeMask(QRinput $input, $mask)
+    {
+        if($input->getVersion() < 0 || $input->getVersion() > Constants::QRSPEC_VERSION_MAX) {
+            throw new Exception('wrong version');
+        }
+        if($input->getErrorCorrectionLevel() > Constants::QR_ECLEVEL_H) {
+            throw new Exception('wrong level');
+        }
+
+        $raw = new QRrawcode($input);
+
+        QRtools::markTime('after_raw');
+
+        $version = $raw->version;
+        $width = QRspec::getWidth($version);
+        $frame = QRspec::newFrame($version);
+
+        $filler = new FrameFiller($width, $frame);
+        if(is_null($filler)) {
+            return NULL;
+        }
+
+        // inteleaved data and ecc codes
+        for($i=0; $i<$raw->dataLength + $raw->eccLength; $i++) {
+            $code = $raw->getCode();
+            $bit = 0x80;
+            for($j=0; $j<8; $j++) {
+                $addr = $filler->next();
+                $filler->setFrameAt($addr, 0x02 | (($bit & $code) != 0));
+                $bit = $bit >> 1;
+            }
+        }
+
+        QRtools::markTime('after_filler');
+
+        unset($raw);
+
+        // remainder bits
+        $j = QRspec::getRemainder($version);
+        for($i=0; $i<$j; $i++) {
+            $addr = $filler->next();
+            $filler->setFrameAt($addr, 0x02);
+        }
+
+        $frame = $filler->frame;
+        unset($filler);
+
+
+        // masking
+        $maskObj = new QRmask();
+        if($mask < 0) {
+
+            if (Constants::QR_FIND_BEST_MASK) {
+                $masked = $maskObj->mask($width, $frame, $input->getErrorCorrectionLevel());
+            } else {
+                $masked = $maskObj->makeMask($width, $frame, (intval(Constants::QR_DEFAULT_MASK) % 8), $input->getErrorCorrectionLevel());
+            }
+        } else {
+            $masked = $maskObj->makeMask($width, $frame, $mask, $input->getErrorCorrectionLevel());
+        }
+
+        if($masked == NULL) {
+            return NULL;
+        }
+
+        QRtools::markTime('after_mask');
+
+        $this->version = $version;
+        $this->width = $width;
+        $this->data = $masked;
+
+        return $this;
+    }
+
+    //----------------------------------------------------------------------
+    public function encodeInput(QRinput $input)
+    {
+        return $this->encodeMask($input, -1);
+    }
+
+    //----------------------------------------------------------------------
+    public function encodeString8bit($string, $version, $level)
+    {
+        if(string == NULL) {
+            throw new Exception('empty string!');
+            return NULL;
+        }
+
+        $input = new QRinput($version, $level);
+        if($input == NULL) return NULL;
+
+        $ret = $input->append($input, Constants::QR_MODE_8, strlen($string), str_split($string));
+        if($ret < 0) {
+            unset($input);
+            return NULL;
+        }
+        return $this->encodeInput($input);
+    }
+
+    //----------------------------------------------------------------------
+    public function encodeString($string, $version, $level, $hint, $casesensitive)
+    {
+
+        if($hint != Constants::QR_MODE_8 && $hint != Constants::QR_MODE_KANJI) {
+            throw new Exception('bad hint');
+            return NULL;
+        }
+
+        $input = new QRinput($version, $level);
+        if($input == NULL) return NULL;
+
+        $ret = QRsplit::splitStringToQRinput($string, $input, $hint, $casesensitive);
+        if($ret < 0) {
+            return NULL;
+        }
+
+        return $this->encodeInput($input);
+    }
+
+    //----------------------------------------------------------------------
+    public static function png($text, $outfile = false, $level = Constants::QR_ECLEVEL_L, $size = 3, $margin = 4, $saveandprint=false)
+    {
+        $enc = QRencode::factory($level, $size, $margin);
+        return $enc->encodePNG($text, $outfile, $saveandprint=false);
+    }
+
+    //----------------------------------------------------------------------
+    public static function text($text, $outfile = false, $level = Constants::QR_ECLEVEL_L, $size = 3, $margin = 4)
+    {
+        $enc = QRencode::factory($level, $size, $margin);
+        return $enc->encode($text, $outfile);
+    }
+
+    //----------------------------------------------------------------------
+    public static function raw($text, $outfile = false, $level = Constants::QR_ECLEVEL_L, $size = 3, $margin = 4)
+    {
+        $enc = QRencode::factory($level, $size, $margin);
+        return $enc->encodeRAW($text, $outfile);
+    }
+}
diff --git a/libs/phpqrcode/lib/PHPQRCode/QRencode.php b/libs/phpqrcode/lib/PHPQRCode/QRencode.php
new file mode 100755
index 00000000..d05ab6b7
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/QRencode.php
@@ -0,0 +1,137 @@
+<?php

+/*

+ * PHP QR Code encoder

+ *

+ * Main encoder classes.

+ *

+ * Based on libqrencode C library distributed under LGPL 2.1

+ * Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@megaui.net>

+ *

+ * PHP QR Code is distributed under LGPL 3

+ * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>

+ *

+ * This library is free software; you can redistribute it and/or

+ * modify it under the terms of the GNU Lesser General Public

+ * License as published by the Free Software Foundation; either

+ * version 3 of the License, or any later version.

+ *

+ * This library is distributed in the hope that it will be useful,

+ * but WITHOUT ANY WARRANTY; without even the implied warranty of

+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

+ * Lesser General Public License for more details.

+ *

+ * You should have received a copy of the GNU Lesser General Public

+ * License along with this library; if not, write to the Free Software

+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

+ */

+

+namespace PHPQRCode;

+

+use Exception;

+

+class QRencode {

+

+    public $casesensitive = true;

+    public $eightbit = false;

+

+    public $version = 0;

+    public $size = 3;

+    public $margin = 4;

+

+    public $structured = 0; // not supported yet

+

+    public $level = Constants::QR_ECLEVEL_L;

+    public $hint = Constants::QR_MODE_8;

+

+    //----------------------------------------------------------------------

+    public static function factory($level = Constants::QR_ECLEVEL_L, $size = 3, $margin = 4)

+    {

+        $enc = new QRencode();

+        $enc->size = $size;

+        $enc->margin = $margin;

+

+        switch ($level.'') {

+            case '0':

+            case '1':

+            case '2':

+            case '3':

+                    $enc->level = $level;

+                break;

+            case 'l':

+            case 'L':

+                    $enc->level = Constants::QR_ECLEVEL_L;

+                break;

+            case 'm':

+            case 'M':

+                    $enc->level = Constants::QR_ECLEVEL_M;

+                break;

+            case 'q':

+            case 'Q':

+                    $enc->level = Constants::QR_ECLEVEL_Q;

+                break;

+            case 'h':

+            case 'H':

+                    $enc->level = Constants::QR_ECLEVEL_H;

+                break;

+        }

+

+        return $enc;

+    }

+

+    //----------------------------------------------------------------------

+    public function encodeRAW($intext, $outfile = false)

+    {

+        $code = new QRcode();

+

+        if($this->eightbit) {

+            $code->encodeString8bit($intext, $this->version, $this->level);

+        } else {

+            $code->encodeString($intext, $this->version, $this->level, $this->hint, $this->casesensitive);

+        }

+

+        return $code->data;

+    }

+

+    //----------------------------------------------------------------------

+    public function encode($intext, $outfile = false)

+    {

+        $code = new QRcode();

+

+        if($this->eightbit) {

+            $code->encodeString8bit($intext, $this->version, $this->level);

+        } else {

+            $code->encodeString($intext, $this->version, $this->level, $this->hint, $this->casesensitive);

+        }

+

+        QRtools::markTime('after_encode');

+

+        if ($outfile!== false) {

+            file_put_contents($outfile, join("\n", QRtools::binarize($code->data)));

+        } else {

+            return QRtools::binarize($code->data);

+        }

+    }

+

+    //----------------------------------------------------------------------

+    public function encodePNG($intext, $outfile = false,$saveandprint=false)

+    {

+        try {

+            ob_start();

+            $tab = $this->encode($intext);

+            $err = ob_get_contents();

+            ob_end_clean();

+

+            if ($err != '')

+                QRtools::log($outfile, "ERROR: " . $err);

+

+            $maxSize = (int)(Constants::QR_PNG_MAXIMUM_SIZE / (count($tab)+2*$this->margin));

+

+            QRimage::png($tab, $outfile, min(max(1, $this->size), $maxSize), $this->margin,$saveandprint);

+        } catch (Exception $e) {

+            echo $e->getMessage();

+            die();

+

+            QRtools::log($outfile, $e->getMessage());

+        }

+    }

+}

diff --git a/libs/phpqrcode/lib/PHPQRCode/QRimage.php b/libs/phpqrcode/lib/PHPQRCode/QRimage.php
new file mode 100755
index 00000000..430a16f8
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/QRimage.php
@@ -0,0 +1,95 @@
+<?php

+/*

+ * PHP QR Code encoder

+ *

+ * Image output of code using GD2

+ *

+ * PHP QR Code is distributed under LGPL 3

+ * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>

+ *

+ * This library is free software; you can redistribute it and/or

+ * modify it under the terms of the GNU Lesser General Public

+ * License as published by the Free Software Foundation; either

+ * version 3 of the License, or any later version.

+ *

+ * This library is distributed in the hope that it will be useful,

+ * but WITHOUT ANY WARRANTY; without even the implied warranty of

+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

+ * Lesser General Public License for more details.

+ *

+ * You should have received a copy of the GNU Lesser General Public

+ * License along with this library; if not, write to the Free Software

+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

+ */

+

+namespace PHPQRCode;

+

+class QRimage {

+

+    //----------------------------------------------------------------------

+    public static function png($frame, $filename = false, $pixelPerPoint = 4, $outerFrame = 4,$saveandprint=FALSE)

+    {

+        $image = self::image($frame, $pixelPerPoint, $outerFrame);

+

+        if ($filename === false) {

+            Header("Content-type: image/png");

+            ImagePng($image);

+        } else {

+            if($saveandprint===TRUE){

+                ImagePng($image, $filename);

+                header("Content-type: image/png");

+                ImagePng($image);

+            }else{

+                ImagePng($image, $filename);

+            }

+        }

+

+        ImageDestroy($image);

+    }

+

+    //----------------------------------------------------------------------

+    public static function jpg($frame, $filename = false, $pixelPerPoint = 8, $outerFrame = 4, $q = 85)

+    {

+        $image = self::image($frame, $pixelPerPoint, $outerFrame);

+

+        if ($filename === false) {

+            Header("Content-type: image/jpeg");

+            ImageJpeg($image, null, $q);

+        } else {

+            ImageJpeg($image, $filename, $q);

+        }

+

+        ImageDestroy($image);

+    }

+

+    //----------------------------------------------------------------------

+    private static function image($frame, $pixelPerPoint = 4, $outerFrame = 4)

+    {

+        $h = count($frame);

+        $w = strlen($frame[0]);

+

+        $imgW = $w + 2*$outerFrame;

+        $imgH = $h + 2*$outerFrame;

+

+        $base_image =ImageCreate($imgW, $imgH);

+

+        $col[0] = ImageColorAllocate($base_image,255,255,255);

+        $col[1] = ImageColorAllocate($base_image,0,0,0);

+

+        imagefill($base_image, 0, 0, $col[0]);

+

+        for($y=0; $y<$h; $y++) {

+            for($x=0; $x<$w; $x++) {

+                if ($frame[$y][$x] == '1') {

+                    ImageSetPixel($base_image,$x+$outerFrame,$y+$outerFrame,$col[1]);

+                }

+            }

+        }

+

+        $target_image =ImageCreate($imgW * $pixelPerPoint, $imgH * $pixelPerPoint);

+        ImageCopyResized($target_image, $base_image, 0, 0, 0, 0, $imgW * $pixelPerPoint, $imgH * $pixelPerPoint, $imgW, $imgH);

+        ImageDestroy($base_image);

+

+        return $target_image;

+    }

+}
\ No newline at end of file
diff --git a/libs/phpqrcode/lib/PHPQRCode/QRinput.php b/libs/phpqrcode/lib/PHPQRCode/QRinput.php
new file mode 100755
index 00000000..8bdd21e7
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/QRinput.php
@@ -0,0 +1,486 @@
+<?php

+/*

+ * PHP QR Code encoder

+ *

+ * Input encoding class

+ *

+ * Based on libqrencode C library distributed under LGPL 2.1

+ * Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@megaui.net>

+ *

+ * PHP QR Code is distributed under LGPL 3

+ * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>

+ *

+ * This library is free software; you can redistribute it and/or

+ * modify it under the terms of the GNU Lesser General Public

+ * License as published by the Free Software Foundation; either

+ * version 3 of the License, or any later version.

+ *

+ * This library is distributed in the hope that it will be useful,

+ * but WITHOUT ANY WARRANTY; without even the implied warranty of

+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

+ * Lesser General Public License for more details.

+ *

+ * You should have received a copy of the GNU Lesser General Public

+ * License along with this library; if not, write to the Free Software

+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

+ */

+

+namespace PHPQRCode;

+

+use Exception;

+

+class QRinput {

+

+    public $items;

+

+    private $version;

+    private $level;

+

+    //----------------------------------------------------------------------

+    public function __construct($version = 0, $level = Constants::QR_ECLEVEL_L)

+    {

+        if ($version < 0 || $version > Constants::QRSPEC_VERSION_MAX || $level > Constants::QR_ECLEVEL_H) {

+            throw new Exception('Invalid version no');

+            return NULL;

+        }

+

+        $this->version = $version;

+        $this->level = $level;

+    }

+

+    //----------------------------------------------------------------------

+    public function getVersion()

+    {

+        return $this->version;

+    }

+

+    //----------------------------------------------------------------------

+    public function setVersion($version)

+    {

+        if($version < 0 || $version > Constants::QRSPEC_VERSION_MAX) {

+            throw new Exception('Invalid version no');

+            return -1;

+        }

+

+        $this->version = $version;

+

+        return 0;

+    }

+

+    //----------------------------------------------------------------------

+    public function getErrorCorrectionLevel()

+    {

+        return $this->level;

+    }

+

+    //----------------------------------------------------------------------

+    public function setErrorCorrectionLevel($level)

+    {

+        if($level > Constants::QR_ECLEVEL_H) {

+            throw new Exception('Invalid ECLEVEL');

+            return -1;

+        }

+

+        $this->level = $level;

+

+        return 0;

+    }

+

+    //----------------------------------------------------------------------

+    public function appendEntry(QRinputItem $entry)

+    {

+        $this->items[] = $entry;

+    }

+

+    //----------------------------------------------------------------------

+    public function append($mode, $size, $data)

+    {

+        try {

+            $entry = new QRinputItem($mode, $size, $data);

+            $this->items[] = $entry;

+            return 0;

+        } catch (Exception $e) {

+            return -1;

+        }

+    }

+

+    //----------------------------------------------------------------------

+

+    public function insertStructuredAppendHeader($size, $index, $parity)

+    {

+        if( $size > Constants::MAX_STRUCTURED_SYMBOLS ) {

+            throw new Exception('insertStructuredAppendHeader wrong size');

+        }

+

+        if( $index <= 0 || $index > Constants::MAX_STRUCTURED_SYMBOLS ) {

+            throw new Exception('insertStructuredAppendHeader wrong index');

+        }

+

+        $buf = array($size, $index, $parity);

+

+        try {

+            $entry = new QRinputItem(Constants::QR_MODE_STRUCTURE, 3, buf);

+            array_unshift($this->items, $entry);

+            return 0;

+        } catch (Exception $e) {

+            return -1;

+        }

+    }

+

+    //----------------------------------------------------------------------

+    public function calcParity()

+    {

+        $parity = 0;

+

+        foreach($this->items as $item) {

+            if($item->mode != Constants::QR_MODE_STRUCTURE) {

+                for($i=$item->size-1; $i>=0; $i--) {

+                    $parity ^= $item->data[$i];

+                }

+            }

+        }

+

+        return $parity;

+    }

+

+    //----------------------------------------------------------------------

+    public static function checkModeNum($size, $data)

+    {

+        for($i=0; $i<$size; $i++) {

+            if((ord($data[$i]) < ord('0')) || (ord($data[$i]) > ord('9'))){

+                return false;

+            }

+        }

+

+        return true;

+    }

+

+    //----------------------------------------------------------------------

+    public static function estimateBitsModeNum($size)

+    {

+        $w = (int)$size / 3;

+        $bits = $w * 10;

+

+        switch($size - $w * 3) {

+            case 1:

+                $bits += 4;

+                break;

+            case 2:

+                $bits += 7;

+                break;

+            default:

+                break;

+        }

+

+        return $bits;

+    }

+

+    //----------------------------------------------------------------------

+    public static $anTable = array(

+        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,

+        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,

+        36, -1, -1, -1, 37, 38, -1, -1, -1, -1, 39, 40, -1, 41, 42, 43,

+         0,  1,  2,  3,  4,  5,  6,  7,  8,  9, 44, -1, -1, -1, -1, -1,

+        -1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,

+        25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1,

+        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,

+        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1

+    );

+

+    //----------------------------------------------------------------------

+    public static function lookAnTable($c)

+    {

+        return (($c > 127)?-1:self::$anTable[$c]);

+    }

+

+    //----------------------------------------------------------------------

+    public static function checkModeAn($size, $data)

+    {

+        for($i=0; $i<$size; $i++) {

+            if (self::lookAnTable(ord($data[$i])) == -1) {

+                return false;

+            }

+        }

+

+        return true;

+    }

+

+    //----------------------------------------------------------------------

+    public static function estimateBitsModeAn($size)

+    {

+        $w = (int)($size / 2);

+        $bits = $w * 11;

+

+        if($size & 1) {

+            $bits += 6;

+        }

+

+        return $bits;

+    }

+

+    //----------------------------------------------------------------------

+    public static function estimateBitsMode8($size)

+    {

+        return $size * 8;

+    }

+

+    //----------------------------------------------------------------------

+    public function estimateBitsModeKanji($size)

+    {

+        return (int)(($size / 2) * 13);

+    }

+

+    //----------------------------------------------------------------------

+    public static function checkModeKanji($size, $data)

+    {

+        if($size & 1)

+            return false;

+

+        for($i=0; $i<$size; $i+=2) {

+            $val = (ord($data[$i]) << 8) | ord($data[$i+1]);

+            if( $val < 0x8140

+            || ($val > 0x9ffc && $val < 0xe040)

+            || $val > 0xebbf) {

+                return false;

+            }

+        }

+

+        return true;

+    }

+

+    /***********************************************************************

+     * Validation

+     **********************************************************************/

+

+    public static function check($mode, $size, $data)

+    {

+        if($size <= 0)

+            return false;

+

+        switch($mode) {

+            case Constants::QR_MODE_NUM:       return self::checkModeNum($size, $data);   break;

+            case Constants::QR_MODE_AN:        return self::checkModeAn($size, $data);    break;

+            case Constants::QR_MODE_KANJI:     return self::checkModeKanji($size, $data); break;

+            case Constants::QR_MODE_8:         return true; break;

+            case Constants::QR_MODE_STRUCTURE: return true; break;

+

+            default:

+                break;

+        }

+

+        return false;

+    }

+

+

+    //----------------------------------------------------------------------

+    public function estimateBitStreamSize($version)

+    {

+        $bits = 0;

+

+        foreach($this->items as $item) {

+            $bits += $item->estimateBitStreamSizeOfEntry($version);

+        }

+

+        return $bits;

+    }

+

+    //----------------------------------------------------------------------

+    public function estimateVersion()

+    {

+        $version = 0;

+        $prev = 0;

+        do {

+            $prev = $version;

+            $bits = $this->estimateBitStreamSize($prev);

+            $version = QRspec::getMinimumVersion((int)(($bits + 7) / 8), $this->level);

+            if ($version < 0) {

+                return -1;

+            }

+        } while ($version > $prev);

+

+        return $version;

+    }

+

+    //----------------------------------------------------------------------

+    public static function lengthOfCode($mode, $version, $bits)

+    {

+        $payload = $bits - 4 - QRspec::lengthIndicator($mode, $version);

+        switch($mode) {

+            case Constants::QR_MODE_NUM:

+                $chunks = (int)($payload / 10);

+                $remain = $payload - $chunks * 10;

+                $size = $chunks * 3;

+                if($remain >= 7) {

+                    $size += 2;

+                } else if($remain >= 4) {

+                    $size += 1;

+                }

+                break;

+            case Constants::QR_MODE_AN:

+                $chunks = (int)($payload / 11);

+                $remain = $payload - $chunks * 11;

+                $size = $chunks * 2;

+                if($remain >= 6)

+                    $size++;

+                break;

+            case Constants::QR_MODE_8:

+                $size = (int)($payload / 8);

+                break;

+            case Constants::QR_MODE_KANJI:

+                $size = (int)(($payload / 13) * 2);

+                break;

+            case Constants::QR_MODE_STRUCTURE:

+                $size = (int)($payload / 8);

+                break;

+            default:

+                $size = 0;

+                break;

+        }

+

+        $maxsize = QRspec::maximumWords($mode, $version);

+        if($size < 0) $size = 0;

+        if($size > $maxsize) $size = $maxsize;

+

+        return $size;

+    }

+

+    //----------------------------------------------------------------------

+    public function createBitStream()

+    {

+        $total = 0;

+

+        foreach($this->items as $item) {

+            $bits = $item->encodeBitStream($this->version);

+

+            if($bits < 0)

+                return -1;

+

+            $total += $bits;

+        }

+

+        return $total;

+    }

+

+    //----------------------------------------------------------------------

+    public function convertData()

+    {

+        $ver = $this->estimateVersion();

+        if($ver > $this->getVersion()) {

+            $this->setVersion($ver);

+        }

+

+        for(;;) {

+            $bits = $this->createBitStream();

+

+            if($bits < 0)

+                return -1;

+

+            $ver = QRspec::getMinimumVersion((int)(($bits + 7) / 8), $this->level);

+            if($ver < 0) {

+                throw new Exception('WRONG VERSION');

+                return -1;

+            } else if($ver > $this->getVersion()) {

+                $this->setVersion($ver);

+            } else {

+                break;

+            }

+        }

+

+        return 0;

+    }

+

+    //----------------------------------------------------------------------

+    public function appendPaddingBit(&$bstream)

+    {

+        $bits = $bstream->size();

+        $maxwords = QRspec::getDataLength($this->version, $this->level);

+        $maxbits = $maxwords * 8;

+

+        if ($maxbits == $bits) {

+            return 0;

+        }

+

+        if ($maxbits - $bits < 5) {

+            return $bstream->appendNum($maxbits - $bits, 0);

+        }

+

+        $bits += 4;

+        $words = (int)(($bits + 7) / 8);

+

+        $padding = new QRbitstream();

+        $ret = $padding->appendNum($words * 8 - $bits + 4, 0);

+

+        if($ret < 0)

+            return $ret;

+

+        $padlen = $maxwords - $words;

+

+        if($padlen > 0) {

+

+            $padbuf = array();

+            for($i=0; $i<$padlen; $i++) {

+                $padbuf[$i] = ($i&1)?0x11:0xec;

+            }

+

+            $ret = $padding->appendBytes($padlen, $padbuf);

+

+            if($ret < 0)

+                return $ret;

+

+        }

+

+        $ret = $bstream->append($padding);

+

+        return $ret;

+    }

+

+    //----------------------------------------------------------------------

+    public function mergeBitStream()

+    {

+        if($this->convertData() < 0) {

+            return null;

+        }

+

+        $bstream = new QRbitstream();

+

+        foreach($this->items as $item) {

+            $ret = $bstream->append($item->bstream);

+            if($ret < 0) {

+                return null;

+            }

+        }

+

+        return $bstream;

+    }

+

+    //----------------------------------------------------------------------

+    public function getBitStream()

+    {

+

+        $bstream = $this->mergeBitStream();

+

+        if($bstream == null) {

+            return null;

+        }

+

+        $ret = $this->appendPaddingBit($bstream);

+        if($ret < 0) {

+            return null;

+        }

+

+        return $bstream;

+    }

+

+    //----------------------------------------------------------------------

+    public function getByteStream()

+    {

+        $bstream = $this->getBitStream();

+        if($bstream == null) {

+            return null;

+        }

+

+        return $bstream->toByte();

+    }

+}

+

+

diff --git a/libs/phpqrcode/lib/PHPQRCode/QRinputItem.php b/libs/phpqrcode/lib/PHPQRCode/QRinputItem.php
new file mode 100644
index 00000000..1e5eb18d
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/QRinputItem.php
@@ -0,0 +1,246 @@
+<?php
+
+namespace PHPQRCode;
+
+use Exception;
+
+class QRinputItem {
+
+    public $mode;
+    public $size;
+    public $data;
+    public $bstream;
+
+    public function __construct($mode, $size, $data, $bstream = null)
+    {
+        $setData = array_slice($data, 0, $size);
+
+        if (count($setData) < $size) {
+            $setData = array_merge($setData, array_fill(0,$size-count($setData),0));
+        }
+
+        if(!QRinput::check($mode, $size, $setData)) {
+            throw new Exception('Error m:'.$mode.',s:'.$size.',d:'.join(',',$setData));
+            return null;
+        }
+
+        $this->mode = $mode;
+        $this->size = $size;
+        $this->data = $setData;
+        $this->bstream = $bstream;
+    }
+
+    //----------------------------------------------------------------------
+    public function encodeModeNum($version)
+    {
+        try {
+
+            $words = (int)($this->size / 3);
+            $bs = new QRbitstream();
+
+            $val = 0x1;
+            $bs->appendNum(4, $val);
+            $bs->appendNum(QRspec::lengthIndicator(Constants::QR_MODE_NUM, $version), $this->size);
+
+            for($i=0; $i<$words; $i++) {
+                $val  = (ord($this->data[$i*3  ]) - ord('0')) * 100;
+                $val += (ord($this->data[$i*3+1]) - ord('0')) * 10;
+                $val += (ord($this->data[$i*3+2]) - ord('0'));
+                $bs->appendNum(10, $val);
+            }
+
+            if($this->size - $words * 3 == 1) {
+                $val = ord($this->data[$words*3]) - ord('0');
+                $bs->appendNum(4, $val);
+            } else if($this->size - $words * 3 == 2) {
+                $val  = (ord($this->data[$words*3  ]) - ord('0')) * 10;
+                $val += (ord($this->data[$words*3+1]) - ord('0'));
+                $bs->appendNum(7, $val);
+            }
+
+            $this->bstream = $bs;
+            return 0;
+
+        } catch (Exception $e) {
+            return -1;
+        }
+    }
+
+    //----------------------------------------------------------------------
+    public function encodeModeAn($version)
+    {
+        try {
+            $words = (int)($this->size / 2);
+            $bs = new QRbitstream();
+
+            $bs->appendNum(4, 0x02);
+            $bs->appendNum(QRspec::lengthIndicator(Constants::QR_MODE_AN, $version), $this->size);
+
+            for($i=0; $i<$words; $i++) {
+                $val  = (int)QRinput::lookAnTable(ord($this->data[$i*2  ])) * 45;
+                $val += (int)QRinput::lookAnTable(ord($this->data[$i*2+1]));
+
+                $bs->appendNum(11, $val);
+            }
+
+            if($this->size & 1) {
+                $val = QRinput::lookAnTable(ord($this->data[$words * 2]));
+                $bs->appendNum(6, $val);
+            }
+
+            $this->bstream = $bs;
+            return 0;
+
+        } catch (Exception $e) {
+            return -1;
+        }
+    }
+
+    //----------------------------------------------------------------------
+    public function encodeMode8($version)
+    {
+        try {
+            $bs = new QRbitstream();
+
+            $bs->appendNum(4, 0x4);
+            $bs->appendNum(QRspec::lengthIndicator(Constants::QR_MODE_8, $version), $this->size);
+
+            for($i=0; $i<$this->size; $i++) {
+                $bs->appendNum(8, ord($this->data[$i]));
+            }
+
+            $this->bstream = $bs;
+            return 0;
+
+        } catch (Exception $e) {
+            return -1;
+        }
+    }
+
+    //----------------------------------------------------------------------
+    public function encodeModeKanji($version)
+    {
+        try {
+
+            $bs = new QRbitstream();
+
+            $bs->appendNum(4, 0x8);
+            $bs->appendNum(QRspec::lengthIndicator(Constants::QR_MODE_KANJI, $version), (int)($this->size / 2));
+
+            for($i=0; $i<$this->size; $i+=2) {
+                $val = (ord($this->data[$i]) << 8) | ord($this->data[$i+1]);
+                if($val <= 0x9ffc) {
+                    $val -= 0x8140;
+                } else {
+                    $val -= 0xc140;
+                }
+
+                $h = ($val >> 8) * 0xc0;
+                $val = ($val & 0xff) + $h;
+
+                $bs->appendNum(13, $val);
+            }
+
+            $this->bstream = $bs;
+            return 0;
+
+        } catch (Exception $e) {
+            return -1;
+        }
+    }
+
+    //----------------------------------------------------------------------
+    public function encodeModeStructure()
+    {
+        try {
+            $bs =  new QRbitstream();
+
+            $bs->appendNum(4, 0x03);
+            $bs->appendNum(4, ord($this->data[1]) - 1);
+            $bs->appendNum(4, ord($this->data[0]) - 1);
+            $bs->appendNum(8, ord($this->data[2]));
+
+            $this->bstream = $bs;
+            return 0;
+
+        } catch (Exception $e) {
+            return -1;
+        }
+    }
+
+    //----------------------------------------------------------------------
+    public function estimateBitStreamSizeOfEntry($version)
+    {
+        $bits = 0;
+
+        if($version == 0)
+            $version = 1;
+
+        switch($this->mode) {
+            case Constants::QR_MODE_NUM:        $bits = QRinput::estimateBitsModeNum($this->size);    break;
+            case Constants::QR_MODE_AN:        $bits = QRinput::estimateBitsModeAn($this->size);    break;
+            case Constants::QR_MODE_8:            $bits = QRinput::estimateBitsMode8($this->size);    break;
+            case Constants::QR_MODE_KANJI:        $bits = QRinput::estimateBitsModeKanji($this->size);break;
+            case Constants::QR_MODE_STRUCTURE:    return Constants::STRUCTURE_HEADER_BITS;
+            default:
+                return 0;
+        }
+
+        $l = QRspec::lengthIndicator($this->mode, $version);
+        $m = 1 << $l;
+        $num = (int)(($this->size + $m - 1) / $m);
+
+        $bits += $num * (4 + $l);
+
+        return $bits;
+    }
+
+    //----------------------------------------------------------------------
+    public function encodeBitStream($version)
+    {
+        try {
+
+            unset($this->bstream);
+            $words = QRspec::maximumWords($this->mode, $version);
+
+            if($this->size > $words) {
+
+                $st1 = new QRinputItem($this->mode, $words, $this->data);
+                $st2 = new QRinputItem($this->mode, $this->size - $words, array_slice($this->data, $words));
+
+                $st1->encodeBitStream($version);
+                $st2->encodeBitStream($version);
+
+                $this->bstream = new QRbitstream();
+                $this->bstream->append($st1->bstream);
+                $this->bstream->append($st2->bstream);
+
+                unset($st1);
+                unset($st2);
+
+            } else {
+
+                $ret = 0;
+
+                switch($this->mode) {
+                    case Constants::QR_MODE_NUM:        $ret = $this->encodeModeNum($version);    break;
+                    case Constants::QR_MODE_AN:        $ret = $this->encodeModeAn($version);    break;
+                    case Constants::QR_MODE_8:            $ret = $this->encodeMode8($version);    break;
+                    case Constants::QR_MODE_KANJI:        $ret = $this->encodeModeKanji($version);break;
+                    case Constants::QR_MODE_STRUCTURE:    $ret = $this->encodeModeStructure();    break;
+
+                    default:
+                        break;
+                }
+
+                if($ret < 0)
+                    return -1;
+            }
+
+            return $this->bstream->size();
+
+        } catch (Exception $e) {
+            return -1;
+        }
+    }
+}
diff --git a/libs/phpqrcode/lib/PHPQRCode/QRmask.php b/libs/phpqrcode/lib/PHPQRCode/QRmask.php
new file mode 100755
index 00000000..2be76f47
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/QRmask.php
@@ -0,0 +1,325 @@
+<?php

+/*

+ * PHP QR Code encoder

+ *

+ * Masking

+ *

+ * Based on libqrencode C library distributed under LGPL 2.1

+ * Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@megaui.net>

+ *

+ * PHP QR Code is distributed under LGPL 3

+ * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>

+ *

+ * This library is free software; you can redistribute it and/or

+ * modify it under the terms of the GNU Lesser General Public

+ * License as published by the Free Software Foundation; either

+ * version 3 of the License, or any later version.

+ *

+ * This library is distributed in the hope that it will be useful,

+ * but WITHOUT ANY WARRANTY; without even the implied warranty of

+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

+ * Lesser General Public License for more details.

+ *

+ * You should have received a copy of the GNU Lesser General Public

+ * License along with this library; if not, write to the Free Software

+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

+ */

+

+namespace PHPQRCode;

+

+class QRmask {

+

+    public $runLength = array();

+

+    //----------------------------------------------------------------------

+    public function __construct()

+    {

+        $this->runLength = array_fill(0, Constants::QRSPEC_WIDTH_MAX + 1, 0);

+    }

+

+    //----------------------------------------------------------------------

+    public function writeFormatInformation($width, &$frame, $mask, $level)

+    {

+        $blacks = 0;

+        $format =  QRspec::getFormatInfo($mask, $level);

+

+        for($i=0; $i<8; $i++) {

+            if($format & 1) {

+                $blacks += 2;

+                $v = 0x85;

+            } else {

+                $v = 0x84;

+            }

+

+            $frame[8][$width - 1 - $i] = chr($v);

+            if($i < 6) {

+                $frame[$i][8] = chr($v);

+            } else {

+                $frame[$i + 1][8] = chr($v);

+            }

+            $format = $format >> 1;

+        }

+

+        for($i=0; $i<7; $i++) {

+            if($format & 1) {

+                $blacks += 2;

+                $v = 0x85;

+            } else {

+                $v = 0x84;

+            }

+

+            $frame[$width - 7 + $i][8] = chr($v);

+            if($i == 0) {

+                $frame[8][7] = chr($v);

+            } else {

+                $frame[8][6 - $i] = chr($v);

+            }

+

+            $format = $format >> 1;

+        }

+

+        return $blacks;

+    }

+

+    //----------------------------------------------------------------------

+    public function mask0($x, $y) { return ($x+$y)&1;                       }

+    public function mask1($x, $y) { return ($y&1);                          }

+    public function mask2($x, $y) { return ($x%3);                          }

+    public function mask3($x, $y) { return ($x+$y)%3;                       }

+    public function mask4($x, $y) { return (((int)($y/2))+((int)($x/3)))&1; }

+    public function mask5($x, $y) { return (($x*$y)&1)+($x*$y)%3;           }

+    public function mask6($x, $y) { return ((($x*$y)&1)+($x*$y)%3)&1;       }

+    public function mask7($x, $y) { return ((($x*$y)%3)+(($x+$y)&1))&1;     }

+

+    //----------------------------------------------------------------------

+    private function generateMaskNo($maskNo, $width, $frame)

+    {

+        $bitMask = array_fill(0, $width, array_fill(0, $width, 0));

+

+        for($y=0; $y<$width; $y++) {

+            for($x=0; $x<$width; $x++) {

+                if(ord($frame[$y][$x]) & 0x80) {

+                    $bitMask[$y][$x] = 0;

+                } else {

+                    $maskFunc = call_user_func(array($this, 'mask'.$maskNo), $x, $y);

+                    $bitMask[$y][$x] = ($maskFunc == 0)?1:0;

+                }

+

+            }

+        }

+

+        return $bitMask;

+    }

+

+    //----------------------------------------------------------------------

+    public static function serial($bitFrame)

+    {

+        $codeArr = array();

+

+        foreach ($bitFrame as $line)

+            $codeArr[] = join('', $line);

+

+        return gzcompress(join("\n", $codeArr), 9);

+    }

+

+    //----------------------------------------------------------------------

+    public static function unserial($code)

+    {

+        $codeArr = array();

+

+        $codeLines = explode("\n", gzuncompress($code));

+        foreach ($codeLines as $line)

+            $codeArr[] = str_split($line);

+

+        return $codeArr;

+    }

+

+    //----------------------------------------------------------------------

+    public function makeMaskNo($maskNo, $width, $s, &$d, $maskGenOnly = false)

+    {

+        $b = 0;

+        $bitMask = array();

+

+        $fileName = Constants::QR_CACHE_DIR.'mask_'.$maskNo.DIRECTORY_SEPARATOR.'mask_'.$width.'_'.$maskNo.'.dat';

+

+        if (Constants::QR_CACHEABLE) {

+            if (file_exists($fileName)) {

+                $bitMask = self::unserial(file_get_contents($fileName));

+            } else {

+                $bitMask = $this->generateMaskNo($maskNo, $width, $s, $d);

+                if (!file_exists(Constants::QR_CACHE_DIR.'mask_'.$maskNo))

+                    mkdir(Constants::QR_CACHE_DIR.'mask_'.$maskNo);

+                file_put_contents($fileName, self::serial($bitMask));

+            }

+        } else {

+            $bitMask = $this->generateMaskNo($maskNo, $width, $s, $d);

+        }

+

+        if ($maskGenOnly)

+            return;

+

+        $d = $s;

+

+        for($y=0; $y<$width; $y++) {

+            for($x=0; $x<$width; $x++) {

+                if($bitMask[$y][$x] == 1) {

+                    $d[$y][$x] = chr(ord($s[$y][$x]) ^ (int)$bitMask[$y][$x]);

+                }

+                $b += (int)(ord($d[$y][$x]) & 1);

+            }

+        }

+

+        return $b;

+    }

+

+    //----------------------------------------------------------------------

+    public function makeMask($width, $frame, $maskNo, $level)

+    {

+        $masked = array_fill(0, $width, str_repeat("\0", $width));

+        $this->makeMaskNo($maskNo, $width, $frame, $masked);

+        $this->writeFormatInformation($width, $masked, $maskNo, $level);

+

+        return $masked;

+    }

+

+    //----------------------------------------------------------------------

+    public function calcN1N3($length)

+    {

+        $demerit = 0;

+

+        for($i=0; $i<$length; $i++) {

+

+            if($this->runLength[$i] >= 5) {

+                $demerit += (Constants::N1 + ($this->runLength[$i] - 5));

+            }

+            if($i & 1) {

+                if(($i >= 3) && ($i < ($length-2)) && ($this->runLength[$i] % 3 == 0)) {

+                    $fact = (int)($this->runLength[$i] / 3);

+                    if(($this->runLength[$i-2] == $fact) &&

+                       ($this->runLength[$i-1] == $fact) &&

+                       ($this->runLength[$i+1] == $fact) &&

+                       ($this->runLength[$i+2] == $fact)) {

+                        if(($this->runLength[$i-3] < 0) || ($this->runLength[$i-3] >= (4 * $fact))) {

+                            $demerit += Constants::N3;

+                        } else if((($i+3) >= $length) || ($this->runLength[$i+3] >= (4 * $fact))) {

+                            $demerit += Constants::N3;

+                        }

+                    }

+                }

+            }

+        }

+        return $demerit;

+    }

+

+    //----------------------------------------------------------------------

+    public function evaluateSymbol($width, $frame)

+    {

+        $head = 0;

+        $demerit = 0;

+

+        for($y=0; $y<$width; $y++) {

+            $head = 0;

+            $this->runLength[0] = 1;

+

+            $frameY = $frame[$y];

+

+            if ($y>0)

+                $frameYM = $frame[$y-1];

+

+            for($x=0; $x<$width; $x++) {

+                if(($x > 0) && ($y > 0)) {

+                    $b22 = ord($frameY[$x]) & ord($frameY[$x-1]) & ord($frameYM[$x]) & ord($frameYM[$x-1]);

+                    $w22 = ord($frameY[$x]) | ord($frameY[$x-1]) | ord($frameYM[$x]) | ord($frameYM[$x-1]);

+

+                    if(($b22 | ($w22 ^ 1))&1) {

+                        $demerit += Constants::N2;

+                    }

+                }

+                if(($x == 0) && (ord($frameY[$x]) & 1)) {

+                    $this->runLength[0] = -1;

+                    $head = 1;

+                    $this->runLength[$head] = 1;

+                } else if($x > 0) {

+                    if((ord($frameY[$x]) ^ ord($frameY[$x-1])) & 1) {

+                        $head++;

+                        $this->runLength[$head] = 1;

+                    } else {

+                        $this->runLength[$head]++;

+                    }

+                }

+            }

+

+            $demerit += $this->calcN1N3($head+1);

+        }

+

+        for($x=0; $x<$width; $x++) {

+            $head = 0;

+            $this->runLength[0] = 1;

+

+            for($y=0; $y<$width; $y++) {

+                if($y == 0 && (ord($frame[$y][$x]) & 1)) {

+                    $this->runLength[0] = -1;

+                    $head = 1;

+                    $this->runLength[$head] = 1;

+                } else if($y > 0) {

+                    if((ord($frame[$y][$x]) ^ ord($frame[$y-1][$x])) & 1) {

+                        $head++;

+                        $this->runLength[$head] = 1;

+                    } else {

+                        $this->runLength[$head]++;

+                    }

+                }

+            }

+

+            $demerit += $this->calcN1N3($head+1);

+        }

+

+        return $demerit;

+    }

+

+

+    //----------------------------------------------------------------------

+    public function mask($width, $frame, $level)

+    {

+        $minDemerit = PHP_INT_MAX;

+        $bestMaskNum = 0;

+        $bestMask = array();

+

+        $checked_masks = array(0,1,2,3,4,5,6,7);

+

+        if (Constants::QR_FIND_FROM_RANDOM !== false) {

+

+            $howManuOut = 8-(Constants::QR_FIND_FROM_RANDOM % 9);

+            for ($i = 0; $i <  $howManuOut; $i++) {

+                $remPos = rand (0, count($checked_masks)-1);

+                unset($checked_masks[$remPos]);

+                $checked_masks = array_values($checked_masks);

+            }

+

+        }

+

+        $bestMask = $frame;

+

+        foreach($checked_masks as $i) {

+            $mask = array_fill(0, $width, str_repeat("\0", $width));

+

+            $demerit = 0;

+            $blacks = 0;

+            $blacks  = $this->makeMaskNo($i, $width, $frame, $mask);

+            $blacks += $this->writeFormatInformation($width, $mask, $i, $level);

+            $blacks  = (int)(100 * $blacks / ($width * $width));

+            $demerit = (int)((int)(abs($blacks - 50) / 5) * Constants::N4);

+            $demerit += $this->evaluateSymbol($width, $mask);

+

+            if($demerit < $minDemerit) {

+                $minDemerit = $demerit;

+                $bestMask = $mask;

+                $bestMaskNum = $i;

+            }

+        }

+

+        return $bestMask;

+    }

+

+    //----------------------------------------------------------------------

+}

diff --git a/libs/phpqrcode/lib/PHPQRCode/QRrawcode.php b/libs/phpqrcode/lib/PHPQRCode/QRrawcode.php
new file mode 100644
index 00000000..25eae7c8
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/QRrawcode.php
@@ -0,0 +1,117 @@
+<?php
+/**
+ * QRrawcode.php
+ *
+ * Created by arielferrandini
+ */
+
+namespace PHPQRCode;
+
+use Exception;
+
+class QRrawcode {
+    public $version;
+    public $datacode = array();
+    public $ecccode = array();
+    public $blocks;
+    public $rsblocks = array(); //of RSblock
+    public $count;
+    public $dataLength;
+    public $eccLength;
+    public $b1;
+
+    //----------------------------------------------------------------------
+    public function __construct(QRinput $input)
+    {
+        $spec = array(0,0,0,0,0);
+
+        $this->datacode = $input->getByteStream();
+        if(is_null($this->datacode)) {
+            throw new Exception('null input string');
+        }
+
+        QRspec::getEccSpec($input->getVersion(), $input->getErrorCorrectionLevel(), $spec);
+
+        $this->version = $input->getVersion();
+        $this->b1 = QRspec::rsBlockNum1($spec);
+        $this->dataLength = QRspec::rsDataLength($spec);
+        $this->eccLength = QRspec::rsEccLength($spec);
+        $this->ecccode = array_fill(0, $this->eccLength, 0);
+        $this->blocks = QRspec::rsBlockNum($spec);
+
+        $ret = $this->init($spec);
+        if($ret < 0) {
+            throw new Exception('block alloc error');
+            return null;
+        }
+
+        $this->count = 0;
+    }
+
+    //----------------------------------------------------------------------
+    public function init(array $spec)
+    {
+        $dl = QRspec::rsDataCodes1($spec);
+        $el = QRspec::rsEccCodes1($spec);
+        $rs = QRrs::init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
+
+
+        $blockNo = 0;
+        $dataPos = 0;
+        $eccPos = 0;
+        for($i=0; $i<QRspec::rsBlockNum1($spec); $i++) {
+            $ecc = array_slice($this->ecccode,$eccPos);
+            $this->rsblocks[$blockNo] = new QRrsblock($dl, array_slice($this->datacode, $dataPos), $el,  $ecc, $rs);
+            $this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc);
+
+            $dataPos += $dl;
+            $eccPos += $el;
+            $blockNo++;
+        }
+
+        if(QRspec::rsBlockNum2($spec) == 0)
+            return 0;
+
+        $dl = QRspec::rsDataCodes2($spec);
+        $el = QRspec::rsEccCodes2($spec);
+        $rs = QRrs::init_rs(8, 0x11d, 0, 1, $el, 255 - $dl - $el);
+
+        if($rs == NULL) return -1;
+
+        for($i=0; $i<QRspec::rsBlockNum2($spec); $i++) {
+            $ecc = array_slice($this->ecccode,$eccPos);
+            $this->rsblocks[$blockNo] = new QRrsblock($dl, array_slice($this->datacode, $dataPos), $el, $ecc, $rs);
+            $this->ecccode = array_merge(array_slice($this->ecccode,0, $eccPos), $ecc);
+
+            $dataPos += $dl;
+            $eccPos += $el;
+            $blockNo++;
+        }
+
+        return 0;
+    }
+
+    //----------------------------------------------------------------------
+    public function getCode()
+    {
+        $ret = null;
+
+        if($this->count < $this->dataLength) {
+            $row = $this->count % $this->blocks;
+            $col = $this->count / $this->blocks;
+            if($col >= $this->rsblocks[0]->dataLength) {
+                $row += $this->b1;
+            }
+            $ret = $this->rsblocks[$row]->data[$col];
+        } else if($this->count < $this->dataLength + $this->eccLength) {
+            $row = ($this->count - $this->dataLength) % $this->blocks;
+            $col = ($this->count - $this->dataLength) / $this->blocks;
+            $ret = $this->rsblocks[$row]->ecc[$col];
+        } else {
+            return 0;
+        }
+        $this->count++;
+
+        return $ret;
+    }
+}
diff --git a/libs/phpqrcode/lib/PHPQRCode/QRrs.php b/libs/phpqrcode/lib/PHPQRCode/QRrs.php
new file mode 100755
index 00000000..66f0d5e7
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/QRrs.php
@@ -0,0 +1,56 @@
+<?php

+/*

+ * PHP QR Code encoder

+ *

+ * Reed-Solomon error correction support

+ * 

+ * Copyright (C) 2002, 2003, 2004, 2006 Phil Karn, KA9Q

+ * (libfec is released under the GNU Lesser General Public License.)

+ *

+ * Based on libqrencode C library distributed under LGPL 2.1

+ * Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@megaui.net>

+ *

+ * PHP QR Code is distributed under LGPL 3

+ * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>

+ *

+ * This library is free software; you can redistribute it and/or

+ * modify it under the terms of the GNU Lesser General Public

+ * License as published by the Free Software Foundation; either

+ * version 3 of the License, or any later version.

+ *

+ * This library is distributed in the hope that it will be useful,

+ * but WITHOUT ANY WARRANTY; without even the implied warranty of

+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

+ * Lesser General Public License for more details.

+ *

+ * You should have received a copy of the GNU Lesser General Public

+ * License along with this library; if not, write to the Free Software

+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

+ */

+

+namespace PHPQRCode;

+

+class QRrs {

+

+    public static $items = array();

+

+    //----------------------------------------------------------------------

+    public static function init_rs($symsize, $gfpoly, $fcr, $prim, $nroots, $pad)

+    {

+        foreach(self::$items as $rs) {

+            if($rs->pad != $pad)       continue;

+            if($rs->nroots != $nroots) continue;

+            if($rs->mm != $symsize)    continue;

+            if($rs->gfpoly != $gfpoly) continue;

+            if($rs->fcr != $fcr)       continue;

+            if($rs->prim != $prim)     continue;

+

+            return $rs;

+        }

+

+        $rs = QRrsItem::init_rs_char($symsize, $gfpoly, $fcr, $prim, $nroots, $pad);

+        array_unshift(self::$items, $rs);

+

+        return $rs;

+    }

+}
\ No newline at end of file
diff --git a/libs/phpqrcode/lib/PHPQRCode/QRrsItem.php b/libs/phpqrcode/lib/PHPQRCode/QRrsItem.php
new file mode 100644
index 00000000..ce63a8c3
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/QRrsItem.php
@@ -0,0 +1,162 @@
+<?php
+/**
+ * QRrsItem.php
+ *
+ * Created by arielferrandini
+ */
+
+namespace PHPQRCode;
+
+class QRrsItem {
+
+    public $mm;                  // Bits per symbol
+    public $nn;                  // Symbols per block (= (1<<mm)-1)
+    public $alpha_to = array();  // log lookup table
+    public $index_of = array();  // Antilog lookup table
+    public $genpoly = array();   // Generator polynomial
+    public $nroots;              // Number of generator roots = number of parity symbols
+    public $fcr;                 // First consecutive root, index form
+    public $prim;                // Primitive element, index form
+    public $iprim;               // prim-th root of 1, index form
+    public $pad;                 // Padding bytes in shortened block
+    public $gfpoly;
+
+    //----------------------------------------------------------------------
+    public function modnn($x)
+    {
+        while ($x >= $this->nn) {
+            $x -= $this->nn;
+            $x = ($x >> $this->mm) + ($x & $this->nn);
+        }
+
+        return $x;
+    }
+
+    //----------------------------------------------------------------------
+    public static function init_rs_char($symsize, $gfpoly, $fcr, $prim, $nroots, $pad)
+    {
+        // Common code for intializing a Reed-Solomon control block (char or int symbols)
+        // Copyright 2004 Phil Karn, KA9Q
+        // May be used under the terms of the GNU Lesser General Public License (LGPL)
+
+        $rs = null;
+
+        // Check parameter ranges
+        if($symsize < 0 || $symsize > 8)                     return $rs;
+        if($fcr < 0 || $fcr >= (1<<$symsize))                return $rs;
+        if($prim <= 0 || $prim >= (1<<$symsize))             return $rs;
+        if($nroots < 0 || $nroots >= (1<<$symsize))          return $rs; // Can't have more roots than symbol values!
+        if($pad < 0 || $pad >= ((1<<$symsize) -1 - $nroots)) return $rs; // Too much padding
+
+        $rs = new QRrsItem();
+        $rs->mm = $symsize;
+        $rs->nn = (1<<$symsize)-1;
+        $rs->pad = $pad;
+
+        $rs->alpha_to = array_fill(0, $rs->nn+1, 0);
+        $rs->index_of = array_fill(0, $rs->nn+1, 0);
+
+        // PHP style macro replacement ;)
+        $NN =& $rs->nn;
+        $A0 =& $NN;
+
+        // Generate Galois field lookup tables
+        $rs->index_of[0] = $A0; // log(zero) = -inf
+        $rs->alpha_to[$A0] = 0; // alpha**-inf = 0
+        $sr = 1;
+
+        for($i=0; $i<$rs->nn; $i++) {
+            $rs->index_of[$sr] = $i;
+            $rs->alpha_to[$i] = $sr;
+            $sr <<= 1;
+            if($sr & (1<<$symsize)) {
+                $sr ^= $gfpoly;
+            }
+            $sr &= $rs->nn;
+        }
+
+        if($sr != 1){
+            // field generator polynomial is not primitive!
+            $rs = NULL;
+            return $rs;
+        }
+
+        /* Form RS code generator polynomial from its roots */
+        $rs->genpoly = array_fill(0, $nroots+1, 0);
+
+        $rs->fcr = $fcr;
+        $rs->prim = $prim;
+        $rs->nroots = $nroots;
+        $rs->gfpoly = $gfpoly;
+
+        /* Find prim-th root of 1, used in decoding */
+        for($iprim=1;($iprim % $prim) != 0;$iprim += $rs->nn)
+        ; // intentional empty-body loop!
+
+        $rs->iprim = (int)($iprim / $prim);
+        $rs->genpoly[0] = 1;
+
+        for ($i = 0,$root=$fcr*$prim; $i < $nroots; $i++, $root += $prim) {
+            $rs->genpoly[$i+1] = 1;
+
+            // Multiply rs->genpoly[] by  @**(root + x)
+            for ($j = $i; $j > 0; $j--) {
+                if ($rs->genpoly[$j] != 0) {
+                    $rs->genpoly[$j] = $rs->genpoly[$j-1] ^ $rs->alpha_to[$rs->modnn($rs->index_of[$rs->genpoly[$j]] + $root)];
+                } else {
+                    $rs->genpoly[$j] = $rs->genpoly[$j-1];
+                }
+            }
+            // rs->genpoly[0] can never be zero
+            $rs->genpoly[0] = $rs->alpha_to[$rs->modnn($rs->index_of[$rs->genpoly[0]] + $root)];
+        }
+
+        // convert rs->genpoly[] to index form for quicker encoding
+        for ($i = 0; $i <= $nroots; $i++)
+            $rs->genpoly[$i] = $rs->index_of[$rs->genpoly[$i]];
+
+        return $rs;
+    }
+
+    //----------------------------------------------------------------------
+    public function encode_rs_char($data, &$parity)
+    {
+        $MM       =& $this->mm;
+        $NN       =& $this->nn;
+        $ALPHA_TO =& $this->alpha_to;
+        $INDEX_OF =& $this->index_of;
+        $GENPOLY  =& $this->genpoly;
+        $NROOTS   =& $this->nroots;
+        $FCR      =& $this->fcr;
+        $PRIM     =& $this->prim;
+        $IPRIM    =& $this->iprim;
+        $PAD      =& $this->pad;
+        $A0       =& $NN;
+
+        $parity = array_fill(0, $NROOTS, 0);
+
+        for($i=0; $i< ($NN-$NROOTS-$PAD); $i++) {
+
+            $feedback = $INDEX_OF[$data[$i] ^ $parity[0]];
+            if($feedback != $A0) {
+                // feedback term is non-zero
+
+                // This line is unnecessary when GENPOLY[NROOTS] is unity, as it must
+                // always be for the polynomials constructed by init_rs()
+                $feedback = $this->modnn($NN - $GENPOLY[$NROOTS] + $feedback);
+
+                for($j=1;$j<$NROOTS;$j++) {
+                    $parity[$j] ^= $ALPHA_TO[$this->modnn($feedback + $GENPOLY[$NROOTS-$j])];
+                }
+            }
+
+            // Shift
+            array_shift($parity);
+            if($feedback != $A0) {
+                array_push($parity, $ALPHA_TO[$this->modnn($feedback + $GENPOLY[0])]);
+            } else {
+                array_push($parity, 0);
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/libs/phpqrcode/lib/PHPQRCode/QRrsblock.php b/libs/phpqrcode/lib/PHPQRCode/QRrsblock.php
new file mode 100644
index 00000000..c1d01f22
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/QRrsblock.php
@@ -0,0 +1,25 @@
+<?php
+/**
+ * QRrsblock.php
+ *
+ * Created by arielferrandini
+ */
+
+namespace PHPQRCode;
+
+class QRrsblock {
+    public $dataLength;
+    public $data = array();
+    public $eccLength;
+    public $ecc = array();
+
+    public function __construct($dl, $data, $el, &$ecc, QRrsItem $rs)
+    {
+        $rs->encode_rs_char($data, $ecc);
+
+        $this->dataLength = $dl;
+        $this->data = $data;
+        $this->eccLength = $el;
+        $this->ecc = $ecc;
+    }
+};
\ No newline at end of file
diff --git a/libs/phpqrcode/lib/PHPQRCode/QRspec.php b/libs/phpqrcode/lib/PHPQRCode/QRspec.php
new file mode 100755
index 00000000..d6843260
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/QRspec.php
@@ -0,0 +1,586 @@
+<?php

+/*

+ * PHP QR Code encoder

+ *

+ * QR Code specifications

+ *

+ * Based on libqrencode C library distributed under LGPL 2.1

+ * Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@megaui.net>

+ *

+ * PHP QR Code is distributed under LGPL 3

+ * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>

+ *

+ * The following data / specifications are taken from

+ * "Two dimensional symbol -- QR-code -- Basic Specification" (JIS X0510:2004)

+ *  or

+ * "Automatic identification and data capture techniques -- 

+ *  QR Code 2005 bar code symbology specification" (ISO/IEC 18004:2006)

+ *

+ * This library is free software; you can redistribute it and/or

+ * modify it under the terms of the GNU Lesser General Public

+ * License as published by the Free Software Foundation; either

+ * version 3 of the License, or any later version.

+ *

+ * This library is distributed in the hope that it will be useful,

+ * but WITHOUT ANY WARRANTY; without even the implied warranty of

+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

+ * Lesser General Public License for more details.

+ *

+ * You should have received a copy of the GNU Lesser General Public

+ * License along with this library; if not, write to the Free Software

+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

+ */

+

+namespace PHPQRCode;

+

+class QRspec {

+

+    public static $capacity = array(

+        array(  0,    0, 0, array(   0,    0,    0,    0)),

+        array( 21,   26, 0, array(   7,   10,   13,   17)), // 1

+        array( 25,   44, 7, array(  10,   16,   22,   28)),

+        array( 29,   70, 7, array(  15,   26,   36,   44)),

+        array( 33,  100, 7, array(  20,   36,   52,   64)),

+        array( 37,  134, 7, array(  26,   48,   72,   88)), // 5

+        array( 41,  172, 7, array(  36,   64,   96,  112)),

+        array( 45,  196, 0, array(  40,   72,  108,  130)),

+        array( 49,  242, 0, array(  48,   88,  132,  156)),

+        array( 53,  292, 0, array(  60,  110,  160,  192)),

+        array( 57,  346, 0, array(  72,  130,  192,  224)), //10

+        array( 61,  404, 0, array(  80,  150,  224,  264)),

+        array( 65,  466, 0, array(  96,  176,  260,  308)),

+        array( 69,  532, 0, array( 104,  198,  288,  352)),

+        array( 73,  581, 3, array( 120,  216,  320,  384)),

+        array( 77,  655, 3, array( 132,  240,  360,  432)), //15

+        array( 81,  733, 3, array( 144,  280,  408,  480)),

+        array( 85,  815, 3, array( 168,  308,  448,  532)),

+        array( 89,  901, 3, array( 180,  338,  504,  588)),

+        array( 93,  991, 3, array( 196,  364,  546,  650)),

+        array( 97, 1085, 3, array( 224,  416,  600,  700)), //20

+        array(101, 1156, 4, array( 224,  442,  644,  750)),

+        array(105, 1258, 4, array( 252,  476,  690,  816)),

+        array(109, 1364, 4, array( 270,  504,  750,  900)),

+        array(113, 1474, 4, array( 300,  560,  810,  960)),

+        array(117, 1588, 4, array( 312,  588,  870, 1050)), //25

+        array(121, 1706, 4, array( 336,  644,  952, 1110)),

+        array(125, 1828, 4, array( 360,  700, 1020, 1200)),

+        array(129, 1921, 3, array( 390,  728, 1050, 1260)),

+        array(133, 2051, 3, array( 420,  784, 1140, 1350)),

+        array(137, 2185, 3, array( 450,  812, 1200, 1440)), //30

+        array(141, 2323, 3, array( 480,  868, 1290, 1530)),

+        array(145, 2465, 3, array( 510,  924, 1350, 1620)),

+        array(149, 2611, 3, array( 540,  980, 1440, 1710)),

+        array(153, 2761, 3, array( 570, 1036, 1530, 1800)),

+        array(157, 2876, 0, array( 570, 1064, 1590, 1890)), //35

+        array(161, 3034, 0, array( 600, 1120, 1680, 1980)),

+        array(165, 3196, 0, array( 630, 1204, 1770, 2100)),

+        array(169, 3362, 0, array( 660, 1260, 1860, 2220)),

+        array(173, 3532, 0, array( 720, 1316, 1950, 2310)),

+        array(177, 3706, 0, array( 750, 1372, 2040, 2430)) //40

+    );

+

+    //----------------------------------------------------------------------

+    public static function getDataLength($version, $level)

+    {

+        return self::$capacity[$version][Constants::QRCAP_WORDS] - self::$capacity[$version][Constants::QRCAP_EC][$level];

+    }

+

+    //----------------------------------------------------------------------

+    public static function getECCLength($version, $level)

+    {

+        return self::$capacity[$version][Constants::QRCAP_EC][$level];

+    }

+

+    //----------------------------------------------------------------------

+    public static function getWidth($version)

+    {

+        return self::$capacity[$version][Constants::QRCAP_WIDTH];

+    }

+

+    //----------------------------------------------------------------------

+    public static function getRemainder($version)

+    {

+        return self::$capacity[$version][Constants::QRCAP_REMINDER];

+    }

+

+    //----------------------------------------------------------------------

+    public static function getMinimumVersion($size, $level)

+    {

+

+        for($i=1; $i<= Constants::QRSPEC_VERSION_MAX; $i++) {

+            $words  = self::$capacity[$i][Constants::QRCAP_WORDS] - self::$capacity[$i][Constants::QRCAP_EC][$level];

+            if($words >= $size)

+                return $i;

+        }

+

+        return -1;

+    }

+

+    //######################################################################

+

+    public static $lengthTableBits = array(

+        array(10, 12, 14),

+        array( 9, 11, 13),

+        array( 8, 16, 16),

+        array( 8, 10, 12)

+    );

+

+    //----------------------------------------------------------------------

+    public static function lengthIndicator($mode, $version)

+    {

+        if ($mode == Constants::QR_MODE_STRUCTURE)

+            return 0;

+

+        if ($version <= 9) {

+            $l = 0;

+        } else if ($version <= 26) {

+            $l = 1;

+        } else {

+            $l = 2;

+        }

+

+        return self::$lengthTableBits[$mode][$l];

+    }

+

+    //----------------------------------------------------------------------

+    public static function maximumWords($mode, $version)

+    {

+        if($mode == Constants::QR_MODE_STRUCTURE)

+            return 3;

+

+        if($version <= 9) {

+            $l = 0;

+        } else if($version <= 26) {

+            $l = 1;

+        } else {

+            $l = 2;

+        }

+

+        $bits = self::$lengthTableBits[$mode][$l];

+        $words = (1 << $bits) - 1;

+

+        if($mode == Constants::QR_MODE_KANJI) {

+            $words *= 2; // the number of bytes is required

+        }

+

+        return $words;

+    }

+

+    // Error correction code -----------------------------------------------

+    // Table of the error correction code (Reed-Solomon block)

+    // See Table 12-16 (pp.30-36), JIS X0510:2004.

+

+    public static $eccTable = array(

+        array(array( 0,  0), array( 0,  0), array( 0,  0), array( 0,  0)),

+        array(array( 1,  0), array( 1,  0), array( 1,  0), array( 1,  0)), // 1

+        array(array( 1,  0), array( 1,  0), array( 1,  0), array( 1,  0)),

+        array(array( 1,  0), array( 1,  0), array( 2,  0), array( 2,  0)),

+        array(array( 1,  0), array( 2,  0), array( 2,  0), array( 4,  0)),

+        array(array( 1,  0), array( 2,  0), array( 2,  2), array( 2,  2)), // 5

+        array(array( 2,  0), array( 4,  0), array( 4,  0), array( 4,  0)),

+        array(array( 2,  0), array( 4,  0), array( 2,  4), array( 4,  1)),

+        array(array( 2,  0), array( 2,  2), array( 4,  2), array( 4,  2)),

+        array(array( 2,  0), array( 3,  2), array( 4,  4), array( 4,  4)),

+        array(array( 2,  2), array( 4,  1), array( 6,  2), array( 6,  2)), //10

+        array(array( 4,  0), array( 1,  4), array( 4,  4), array( 3,  8)),

+        array(array( 2,  2), array( 6,  2), array( 4,  6), array( 7,  4)),

+        array(array( 4,  0), array( 8,  1), array( 8,  4), array(12,  4)),

+        array(array( 3,  1), array( 4,  5), array(11,  5), array(11,  5)),

+        array(array( 5,  1), array( 5,  5), array( 5,  7), array(11,  7)), //15

+        array(array( 5,  1), array( 7,  3), array(15,  2), array( 3, 13)),

+        array(array( 1,  5), array(10,  1), array( 1, 15), array( 2, 17)),

+        array(array( 5,  1), array( 9,  4), array(17,  1), array( 2, 19)),

+        array(array( 3,  4), array( 3, 11), array(17,  4), array( 9, 16)),

+        array(array( 3,  5), array( 3, 13), array(15,  5), array(15, 10)), //20

+        array(array( 4,  4), array(17,  0), array(17,  6), array(19,  6)),

+        array(array( 2,  7), array(17,  0), array( 7, 16), array(34,  0)),

+        array(array( 4,  5), array( 4, 14), array(11, 14), array(16, 14)),

+        array(array( 6,  4), array( 6, 14), array(11, 16), array(30,  2)),

+        array(array( 8,  4), array( 8, 13), array( 7, 22), array(22, 13)), //25

+        array(array(10,  2), array(19,  4), array(28,  6), array(33,  4)),

+        array(array( 8,  4), array(22,  3), array( 8, 26), array(12, 28)),

+        array(array( 3, 10), array( 3, 23), array( 4, 31), array(11, 31)),

+        array(array( 7,  7), array(21,  7), array( 1, 37), array(19, 26)),

+        array(array( 5, 10), array(19, 10), array(15, 25), array(23, 25)), //30

+        array(array(13,  3), array( 2, 29), array(42,  1), array(23, 28)),

+        array(array(17,  0), array(10, 23), array(10, 35), array(19, 35)),

+        array(array(17,  1), array(14, 21), array(29, 19), array(11, 46)),

+        array(array(13,  6), array(14, 23), array(44,  7), array(59,  1)),

+        array(array(12,  7), array(12, 26), array(39, 14), array(22, 41)), //35

+        array(array( 6, 14), array( 6, 34), array(46, 10), array( 2, 64)),

+        array(array(17,  4), array(29, 14), array(49, 10), array(24, 46)),

+        array(array( 4, 18), array(13, 32), array(48, 14), array(42, 32)),

+        array(array(20,  4), array(40,  7), array(43, 22), array(10, 67)),

+        array(array(19,  6), array(18, 31), array(34, 34), array(20, 61)),//40

+    );

+

+    //----------------------------------------------------------------------

+    // CACHEABLE!!!

+

+    public static function getEccSpec($version, $level, array &$spec)

+    {

+        if (count($spec) < 5) {

+            $spec = array(0,0,0,0,0);

+        }

+

+        $b1   = self::$eccTable[$version][$level][0];

+        $b2   = self::$eccTable[$version][$level][1];

+        $data = self::getDataLength($version, $level);

+        $ecc  = self::getECCLength($version, $level);

+

+        if($b2 == 0) {

+            $spec[0] = $b1;

+            $spec[1] = (int)($data / $b1);

+            $spec[2] = (int)($ecc / $b1);

+            $spec[3] = 0;

+            $spec[4] = 0;

+        } else {

+            $spec[0] = $b1;

+            $spec[1] = (int)($data / ($b1 + $b2));

+            $spec[2] = (int)($ecc  / ($b1 + $b2));

+            $spec[3] = $b2;

+            $spec[4] = $spec[1] + 1;

+        }

+    }

+

+    // Alignment pattern ---------------------------------------------------

+

+    // Positions of alignment patterns.

+    // This array includes only the second and the third position of the

+    // alignment patterns. Rest of them can be calculated from the distance

+    // between them.

+

+    // See Table 1 in Appendix E (pp.71) of JIS X0510:2004.

+

+    public static $alignmentPattern = array(

+        array( 0,  0),

+        array( 0,  0), array(18,  0), array(22,  0), array(26,  0), array(30,  0), // 1- 5

+        array(34,  0), array(22, 38), array(24, 42), array(26, 46), array(28, 50), // 6-10

+        array(30, 54), array(32, 58), array(34, 62), array(26, 46), array(26, 48), //11-15

+        array(26, 50), array(30, 54), array(30, 56), array(30, 58), array(34, 62), //16-20

+        array(28, 50), array(26, 50), array(30, 54), array(28, 54), array(32, 58), //21-25

+        array(30, 58), array(34, 62), array(26, 50), array(30, 54), array(26, 52), //26-30

+        array(30, 56), array(34, 60), array(30, 58), array(34, 62), array(30, 54), //31-35

+        array(24, 50), array(28, 54), array(32, 58), array(26, 54), array(30, 58), //35-40

+    );

+

+

+    /** --------------------------------------------------------------------

+     * Put an alignment marker.

+     * @param frame

+     * @param width

+     * @param ox,oy center coordinate of the pattern

+     */

+    public static function putAlignmentMarker(array &$frame, $ox, $oy)

+    {

+        $finder = array(

+            "\xa1\xa1\xa1\xa1\xa1",

+            "\xa1\xa0\xa0\xa0\xa1",

+            "\xa1\xa0\xa1\xa0\xa1",

+            "\xa1\xa0\xa0\xa0\xa1",

+            "\xa1\xa1\xa1\xa1\xa1"

+        );

+

+        $yStart = $oy-2;

+        $xStart = $ox-2;

+

+        for($y=0; $y<5; $y++) {

+            QRstr::set($frame, $xStart, $yStart+$y, $finder[$y]);

+        }

+    }

+

+    //----------------------------------------------------------------------

+    public static function putAlignmentPattern($version, &$frame, $width)

+    {

+        if($version < 2)

+            return;

+

+        $d = self::$alignmentPattern[$version][1] - self::$alignmentPattern[$version][0];

+        if($d < 0) {

+            $w = 2;

+        } else {

+            $w = (int)(($width - self::$alignmentPattern[$version][0]) / $d + 2);

+        }

+

+        if($w * $w - 3 == 1) {

+            $x = self::$alignmentPattern[$version][0];

+            $y = self::$alignmentPattern[$version][0];

+            self::putAlignmentMarker($frame, $x, $y);

+            return;

+        }

+

+        $cx = self::$alignmentPattern[$version][0];

+        for($x=1; $x<$w - 1; $x++) {

+            self::putAlignmentMarker($frame, 6, $cx);

+            self::putAlignmentMarker($frame, $cx,  6);

+            $cx += $d;

+        }

+

+        $cy = self::$alignmentPattern[$version][0];

+        for($y=0; $y<$w-1; $y++) {

+            $cx = self::$alignmentPattern[$version][0];

+            for($x=0; $x<$w-1; $x++) {

+                self::putAlignmentMarker($frame, $cx, $cy);

+                $cx += $d;

+            }

+            $cy += $d;

+        }

+    }

+

+    // Version information pattern -----------------------------------------

+

+    // Version information pattern (BCH coded).

+    // See Table 1 in Appendix D (pp.68) of JIS X0510:2004.

+

+    // size: [Constants::QRSPEC_VERSION_MAX - 6]

+

+    public static $versionPattern = array(

+        0x07c94, 0x085bc, 0x09a99, 0x0a4d3, 0x0bbf6, 0x0c762, 0x0d847, 0x0e60d,

+        0x0f928, 0x10b78, 0x1145d, 0x12a17, 0x13532, 0x149a6, 0x15683, 0x168c9,

+        0x177ec, 0x18ec4, 0x191e1, 0x1afab, 0x1b08e, 0x1cc1a, 0x1d33f, 0x1ed75,

+        0x1f250, 0x209d5, 0x216f0, 0x228ba, 0x2379f, 0x24b0b, 0x2542e, 0x26a64,

+        0x27541, 0x28c69

+    );

+

+    //----------------------------------------------------------------------

+    public static function getVersionPattern($version)

+    {

+        if($version < 7 || $version > Constants::QRSPEC_VERSION_MAX)

+            return 0;

+

+        return self::$versionPattern[$version -7];

+    }

+

+    // Format information --------------------------------------------------

+    // See calcFormatInfo in tests/test_qrspec.c (orginal qrencode c lib)

+

+    public static $formatInfo = array(

+        array(0x77c4, 0x72f3, 0x7daa, 0x789d, 0x662f, 0x6318, 0x6c41, 0x6976),

+        array(0x5412, 0x5125, 0x5e7c, 0x5b4b, 0x45f9, 0x40ce, 0x4f97, 0x4aa0),

+        array(0x355f, 0x3068, 0x3f31, 0x3a06, 0x24b4, 0x2183, 0x2eda, 0x2bed),

+        array(0x1689, 0x13be, 0x1ce7, 0x19d0, 0x0762, 0x0255, 0x0d0c, 0x083b)

+    );

+

+    public static function getFormatInfo($mask, $level)

+    {

+        if($mask < 0 || $mask > 7)

+            return 0;

+

+        if($level < 0 || $level > 3)

+            return 0;

+

+        return self::$formatInfo[$level][$mask];

+    }

+

+    // Frame ---------------------------------------------------------------

+    // Cache of initial frames.

+

+    public static $frames = array();

+

+    /** --------------------------------------------------------------------

+     * Put a finder pattern.

+     * @param frame

+     * @param width

+     * @param ox,oy upper-left coordinate of the pattern

+     */

+    public static function putFinderPattern(&$frame, $ox, $oy)

+    {

+        $finder = array(

+            "\xc1\xc1\xc1\xc1\xc1\xc1\xc1",

+            "\xc1\xc0\xc0\xc0\xc0\xc0\xc1",

+            "\xc1\xc0\xc1\xc1\xc1\xc0\xc1",

+            "\xc1\xc0\xc1\xc1\xc1\xc0\xc1",

+            "\xc1\xc0\xc1\xc1\xc1\xc0\xc1",

+            "\xc1\xc0\xc0\xc0\xc0\xc0\xc1",

+            "\xc1\xc1\xc1\xc1\xc1\xc1\xc1"

+        );

+

+        for($y=0; $y<7; $y++) {

+            QRstr::set($frame, $ox, $oy+$y, $finder[$y]);

+        }

+    }

+

+    //----------------------------------------------------------------------

+    public static function createFrame($version)

+    {

+        $width = self::$capacity[$version][Constants::QRCAP_WIDTH];

+        $frameLine = str_repeat ("\0", $width);

+        $frame = array_fill(0, $width, $frameLine);

+

+        // Finder pattern

+        self::putFinderPattern($frame, 0, 0);

+        self::putFinderPattern($frame, $width - 7, 0);

+        self::putFinderPattern($frame, 0, $width - 7);

+

+        // Separator

+        $yOffset = $width - 7;

+

+        for($y=0; $y<7; $y++) {

+            $frame[$y][7] = "\xc0";

+            $frame[$y][$width - 8] = "\xc0";

+            $frame[$yOffset][7] = "\xc0";

+            $yOffset++;

+        }

+

+        $setPattern = str_repeat("\xc0", 8);

+

+        QRstr::set($frame, 0, 7, $setPattern);

+        QRstr::set($frame, $width-8, 7, $setPattern);

+        QRstr::set($frame, 0, $width - 8, $setPattern);

+

+        // Format info

+        $setPattern = str_repeat("\x84", 9);

+        QRstr::set($frame, 0, 8, $setPattern);

+        QRstr::set($frame, $width - 8, 8, $setPattern, 8);

+

+        $yOffset = $width - 8;

+

+        for($y=0; $y<8; $y++,$yOffset++) {

+            $frame[$y][8] = "\x84";

+            $frame[$yOffset][8] = "\x84";

+        }

+

+        // Timing pattern

+

+        for($i=1; $i<$width-15; $i++) {

+            $frame[6][7+$i] = chr(0x90 | ($i & 1));

+            $frame[7+$i][6] = chr(0x90 | ($i & 1));

+        }

+

+        // Alignment pattern

+        self::putAlignmentPattern($version, $frame, $width);

+

+        // Version information

+        if($version >= 7) {

+            $vinf = self::getVersionPattern($version);

+

+            $v = $vinf;

+

+            for($x=0; $x<6; $x++) {

+                for($y=0; $y<3; $y++) {

+                    $frame[($width - 11)+$y][$x] = chr(0x88 | ($v & 1));

+                    $v = $v >> 1;

+                }

+            }

+

+            $v = $vinf;

+            for($y=0; $y<6; $y++) {

+                for($x=0; $x<3; $x++) {

+                    $frame[$y][$x+($width - 11)] = chr(0x88 | ($v & 1));

+                    $v = $v >> 1;

+                }

+            }

+        }

+

+        // and a little bit...

+        $frame[$width - 8][8] = "\x81";

+

+        return $frame;

+    }

+

+    //----------------------------------------------------------------------

+    public static function debug($frame, $binary_mode = false)

+    {

+        if ($binary_mode) {

+

+                foreach ($frame as &$frameLine) {

+                    $frameLine = join('<span class="m">&nbsp;&nbsp;</span>', explode('0', $frameLine));

+                    $frameLine = join('&#9608;&#9608;', explode('1', $frameLine));

+                }

+

+                ?>

+            <style>

+                .m { background-color: white; }

+            </style>

+            <?php

+                echo '<pre><tt><br/ ><br/ ><br/ >&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;';

+                echo join("<br/ >&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;", $frame);

+                echo '</tt></pre><br/ ><br/ ><br/ ><br/ ><br/ ><br/ >';

+

+        } else {

+

+            foreach ($frame as &$frameLine) {

+                $frameLine = join('<span class="m">&nbsp;</span>',  explode("\xc0", $frameLine));

+                $frameLine = join('<span class="m">&#9618;</span>', explode("\xc1", $frameLine));

+                $frameLine = join('<span class="p">&nbsp;</span>',  explode("\xa0", $frameLine));

+                $frameLine = join('<span class="p">&#9618;</span>', explode("\xa1", $frameLine));

+                $frameLine = join('<span class="s">&#9671;</span>', explode("\x84", $frameLine)); //format 0

+                $frameLine = join('<span class="s">&#9670;</span>', explode("\x85", $frameLine)); //format 1

+                $frameLine = join('<span class="x">&#9762;</span>', explode("\x81", $frameLine)); //special bit

+                $frameLine = join('<span class="c">&nbsp;</span>',  explode("\x90", $frameLine)); //clock 0

+                $frameLine = join('<span class="c">&#9719;</span>', explode("\x91", $frameLine)); //clock 1

+                $frameLine = join('<span class="f">&nbsp;</span>',  explode("\x88", $frameLine)); //version

+                $frameLine = join('<span class="f">&#9618;</span>', explode("\x89", $frameLine)); //version

+                $frameLine = join('&#9830;', explode("\x01", $frameLine));

+                $frameLine = join('&#8901;', explode("\0", $frameLine));

+            }

+

+            ?>

+            <style>

+                .p { background-color: yellow; }

+                .m { background-color: #00FF00; }

+                .s { background-color: #FF0000; }

+                .c { background-color: aqua; }

+                .x { background-color: pink; }

+                .f { background-color: gold; }

+            </style>

+            <?php

+            echo "<pre><tt>";

+            echo join("<br/ >", $frame);

+            echo "</tt></pre>";

+

+        }

+    }

+

+    //----------------------------------------------------------------------

+    public static function serial($frame)

+    {

+        return gzcompress(join("\n", $frame), 9);

+    }

+

+    //----------------------------------------------------------------------

+    public static function unserial($code)

+    {

+        return explode("\n", gzuncompress($code));

+    }

+

+    //----------------------------------------------------------------------

+    public static function newFrame($version)

+    {

+        if($version < 1 || $version > Constants::QRSPEC_VERSION_MAX)

+            return null;

+

+        if(!isset(self::$frames[$version])) {

+

+            $fileName = Constants::QR_CACHE_DIR.'frame_'.$version.'.dat';

+

+            if (Constants::QR_CACHEABLE) {

+                if (file_exists($fileName)) {

+                    self::$frames[$version] = self::unserial(file_get_contents($fileName));

+                } else {

+                    self::$frames[$version] = self::createFrame($version);

+                    file_put_contents($fileName, self::serial(self::$frames[$version]));

+                }

+            } else {

+                self::$frames[$version] = self::createFrame($version);

+            }

+        }

+

+        if(is_null(self::$frames[$version]))

+            return null;

+

+        return self::$frames[$version];

+    }

+

+    //----------------------------------------------------------------------

+    public static function rsBlockNum($spec)     { return $spec[0] + $spec[3]; }

+    public static function rsBlockNum1($spec)    { return $spec[0]; }

+    public static function rsDataCodes1($spec)   { return $spec[1]; }

+    public static function rsEccCodes1($spec)    { return $spec[2]; }

+    public static function rsBlockNum2($spec)    { return $spec[3]; }

+    public static function rsDataCodes2($spec)   { return $spec[4]; }

+    public static function rsEccCodes2($spec)    { return $spec[2]; }

+    public static function rsDataLength($spec)   { return ($spec[0] * $spec[1]) + ($spec[3] * $spec[4]);    }

+    public static function rsEccLength($spec)    { return ($spec[0] + $spec[3]) * $spec[2]; }

+

+}
\ No newline at end of file
diff --git a/libs/phpqrcode/lib/PHPQRCode/QRsplit.php b/libs/phpqrcode/lib/PHPQRCode/QRsplit.php
new file mode 100755
index 00000000..805140a9
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/QRsplit.php
@@ -0,0 +1,316 @@
+<?php

+/*

+ * PHP QR Code encoder

+ *

+ * Input splitting classes

+ *

+ * Based on libqrencode C library distributed under LGPL 2.1

+ * Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@megaui.net>

+ *

+ * PHP QR Code is distributed under LGPL 3

+ * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>

+ *

+ * The following data / specifications are taken from

+ * "Two dimensional symbol -- QR-code -- Basic Specification" (JIS X0510:2004)

+ *  or

+ * "Automatic identification and data capture techniques --

+ *  QR Code 2005 bar code symbology specification" (ISO/IEC 18004:2006)

+ *

+ * This library is free software; you can redistribute it and/or

+ * modify it under the terms of the GNU Lesser General Public

+ * License as published by the Free Software Foundation; either

+ * version 3 of the License, or any later version.

+ *

+ * This library is distributed in the hope that it will be useful,

+ * but WITHOUT ANY WARRANTY; without even the implied warranty of

+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

+ * Lesser General Public License for more details.

+ *

+ * You should have received a copy of the GNU Lesser General Public

+ * License along with this library; if not, write to the Free Software

+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

+ */

+

+namespace PHPQRCode;

+

+use Exception;

+

+class QRsplit {

+

+    public $dataStr = '';

+    public $input;

+    public $modeHint;

+

+    //----------------------------------------------------------------------

+    public function __construct($dataStr, $input, $modeHint)

+    {

+        $this->dataStr  = $dataStr;

+        $this->input    = $input;

+        $this->modeHint = $modeHint;

+    }

+

+    //----------------------------------------------------------------------

+    public static function isdigitat($str, $pos)

+    {

+        if ($pos >= strlen($str))

+            return false;

+

+        return ((ord($str[$pos]) >= ord('0'))&&(ord($str[$pos]) <= ord('9')));

+    }

+

+    //----------------------------------------------------------------------

+    public static function isalnumat($str, $pos)

+    {

+        if ($pos >= strlen($str))

+            return false;

+

+        return (QRinput::lookAnTable(ord($str[$pos])) >= 0);

+    }

+

+    //----------------------------------------------------------------------

+    public function identifyMode($pos)

+    {

+        if ($pos >= strlen($this->dataStr))

+            return Constants::QR_MODE_NUL;

+

+        $c = $this->dataStr[$pos];

+

+        if(self::isdigitat($this->dataStr, $pos)) {

+            return Constants::QR_MODE_NUM;

+        } else if(self::isalnumat($this->dataStr, $pos)) {

+            return Constants::QR_MODE_AN;

+        } else if($this->modeHint == Constants::QR_MODE_KANJI) {

+

+            if ($pos+1 < strlen($this->dataStr))

+            {

+                $d = $this->dataStr[$pos+1];

+                $word = (ord($c) << 8) | ord($d);

+                if(($word >= 0x8140 && $word <= 0x9ffc) || ($word >= 0xe040 && $word <= 0xebbf)) {

+                    return Constants::QR_MODE_KANJI;

+                }

+            }

+        }

+

+        return Constants::QR_MODE_8;

+    }

+

+    //----------------------------------------------------------------------

+    public function eatNum()

+    {

+        $ln = QRspec::lengthIndicator(Constants::QR_MODE_NUM, $this->input->getVersion());

+

+        $p = 0;

+        while(self::isdigitat($this->dataStr, $p)) {

+            $p++;

+        }

+

+        $run = $p;

+        $mode = $this->identifyMode($p);

+

+        if($mode == Constants::QR_MODE_8) {

+            $dif = QRinput::estimateBitsModeNum($run) + 4 + $ln

+                 + QRinput::estimateBitsMode8(1)         // + 4 + l8

+                 - QRinput::estimateBitsMode8($run + 1); // - 4 - l8

+            if($dif > 0) {

+                return $this->eat8();

+            }

+        }

+        if($mode == Constants::QR_MODE_AN) {

+            $dif = QRinput::estimateBitsModeNum($run) + 4 + $ln

+                 + QRinput::estimateBitsModeAn(1)        // + 4 + la

+                 - QRinput::estimateBitsModeAn($run + 1);// - 4 - la

+            if($dif > 0) {

+                return $this->eatAn();

+            }

+        }

+

+        $ret = $this->input->append(Constants::QR_MODE_NUM, $run, str_split($this->dataStr));

+        if($ret < 0)

+            return -1;

+

+        return $run;

+    }

+

+    //----------------------------------------------------------------------

+    public function eatAn()

+    {

+        $la = QRspec::lengthIndicator(Constants::QR_MODE_AN,  $this->input->getVersion());

+        $ln = QRspec::lengthIndicator(Constants::QR_MODE_NUM, $this->input->getVersion());

+

+        $p = 0;

+

+        while(self::isalnumat($this->dataStr, $p)) {

+            if(self::isdigitat($this->dataStr, $p)) {

+                $q = $p;

+                while(self::isdigitat($this->dataStr, $q)) {

+                    $q++;

+                }

+

+                $dif = QRinput::estimateBitsModeAn($p) // + 4 + la

+                     + QRinput::estimateBitsModeNum($q - $p) + 4 + $ln

+                     - QRinput::estimateBitsModeAn($q); // - 4 - la

+

+                if($dif < 0) {

+                    break;

+                } else {

+                    $p = $q;

+                }

+            } else {

+                $p++;

+            }

+        }

+

+        $run = $p;

+

+        if(!self::isalnumat($this->dataStr, $p)) {

+            $dif = QRinput::estimateBitsModeAn($run) + 4 + $la

+                 + QRinput::estimateBitsMode8(1) // + 4 + l8

+                 - QRinput::estimateBitsMode8($run + 1); // - 4 - l8

+            if($dif > 0) {

+                return $this->eat8();

+            }

+        }

+

+        $ret = $this->input->append(Constants::QR_MODE_AN, $run, str_split($this->dataStr));

+        if($ret < 0)

+            return -1;

+

+        return $run;

+    }

+

+    //----------------------------------------------------------------------

+    public function eatKanji()

+    {

+        $p = 0;

+

+        while($this->identifyMode($p) == Constants::QR_MODE_KANJI) {

+            $p += 2;

+        }

+

+        $ret = $this->input->append(Constants::QR_MODE_KANJI, $p, str_split($this->dataStr));

+        if($ret < 0)

+            return -1;

+

+        return $ret;

+    }

+

+    //----------------------------------------------------------------------

+    public function eat8()

+    {

+        $la = QRspec::lengthIndicator(Constants::QR_MODE_AN, $this->input->getVersion());

+        $ln = QRspec::lengthIndicator(Constants::QR_MODE_NUM, $this->input->getVersion());

+

+        $p = 1;

+        $dataStrLen = strlen($this->dataStr);

+

+        while($p < $dataStrLen) {

+

+            $mode = $this->identifyMode($p);

+            if($mode == Constants::QR_MODE_KANJI) {

+                break;

+            }

+            if($mode == Constants::QR_MODE_NUM) {

+                $q = $p;

+                while(self::isdigitat($this->dataStr, $q)) {

+                    $q++;

+                }

+                $dif = QRinput::estimateBitsMode8($p) // + 4 + l8

+                     + QRinput::estimateBitsModeNum($q - $p) + 4 + $ln

+                     - QRinput::estimateBitsMode8($q); // - 4 - l8

+                if($dif < 0) {

+                    break;

+                } else {

+                    $p = $q;

+                }

+            } else if($mode == Constants::QR_MODE_AN) {

+                $q = $p;

+                while(self::isalnumat($this->dataStr, $q)) {

+                    $q++;

+                }

+                $dif = QRinput::estimateBitsMode8($p)  // + 4 + l8

+                     + QRinput::estimateBitsModeAn($q - $p) + 4 + $la

+                     - QRinput::estimateBitsMode8($q); // - 4 - l8

+                if($dif < 0) {

+                    break;

+                } else {

+                    $p = $q;

+                }

+            } else {

+                $p++;

+            }

+        }

+

+        $run = $p;

+        $ret = $this->input->append(Constants::QR_MODE_8, $run, str_split($this->dataStr));

+

+        if($ret < 0)

+            return -1;

+

+        return $run;

+    }

+

+    //----------------------------------------------------------------------

+    public function splitString()

+    {

+        while (strlen($this->dataStr) > 0)

+        {

+            if($this->dataStr == '')

+                return 0;

+

+            $mode = $this->identifyMode(0);

+

+            switch ($mode) {

+                case Constants::QR_MODE_NUM: $length = $this->eatNum(); break;

+                case Constants::QR_MODE_AN:  $length = $this->eatAn(); break;

+                case Constants::QR_MODE_KANJI:

+                    if ($hint == Constants::QR_MODE_KANJI)

+                            $length = $this->eatKanji();

+                    else    $length = $this->eat8();

+                    break;

+                default: $length = $this->eat8(); break;

+

+            }

+

+            if($length == 0) return 0;

+            if($length < 0)  return -1;

+

+            $this->dataStr = substr($this->dataStr, $length);

+        }

+    }

+

+    //----------------------------------------------------------------------

+    public function toUpper()

+    {

+        $stringLen = strlen($this->dataStr);

+        $p = 0;

+

+        while ($p<$stringLen) {

+            $mode = self::identifyMode(substr($this->dataStr, $p), $this->modeHint);

+            if($mode == Constants::QR_MODE_KANJI) {

+                $p += 2;

+            } else {

+                if (ord($this->dataStr[$p]) >= ord('a') && ord($this->dataStr[$p]) <= ord('z')) {

+                    $this->dataStr[$p] = chr(ord($this->dataStr[$p]) - 32);

+                }

+                $p++;

+            }

+        }

+

+        return $this->dataStr;

+    }

+

+    //----------------------------------------------------------------------

+    public static function splitStringToQRinput($string, QRinput $input, $modeHint, $casesensitive = true)

+    {

+        if(is_null($string) || $string == '\0' || $string == '') {

+            throw new Exception('empty string!!!');

+        }

+

+        $split = new QRsplit($string, $input, $modeHint);

+

+        if(!$casesensitive)

+            $split->toUpper();

+

+        return $split->splitString();

+    }

+}

diff --git a/libs/phpqrcode/lib/PHPQRCode/QRstr.php b/libs/phpqrcode/lib/PHPQRCode/QRstr.php
new file mode 100644
index 00000000..64c4bd5c
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/QRstr.php
@@ -0,0 +1,35 @@
+<?php
+
+/*
+ * PHP QR Code encoder
+ *
+ * Common constants
+ *
+ * Based on libqrencode C library distributed under LGPL 2.1
+ * Copyright (C) 2006, 2007, 2008, 2009 Kentaro Fukuchi <fukuchi@megaui.net>
+ *
+ * PHP QR Code is distributed under LGPL 3
+ * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+namespace PHPQRCode;
+
+class QRstr {
+    public static function set(&$srctab, $x, $y, $repl, $replLen = false) {
+        $srctab[$y] = substr_replace($srctab[$y], ($replLen !== false)?substr($repl,0,$replLen):$repl, $x, ($replLen !== false)?$replLen:strlen($repl));
+    }
+}
\ No newline at end of file
diff --git a/libs/phpqrcode/lib/PHPQRCode/QRtools.php b/libs/phpqrcode/lib/PHPQRCode/QRtools.php
new file mode 100755
index 00000000..7c75a6e2
--- /dev/null
+++ b/libs/phpqrcode/lib/PHPQRCode/QRtools.php
@@ -0,0 +1,171 @@
+<?php

+/*

+ * PHP QR Code encoder

+ *

+ * Toolset, handy and debug utilites.

+ *

+ * PHP QR Code is distributed under LGPL 3

+ * Copyright (C) 2010 Dominik Dzienia <deltalab at poczta dot fm>

+ *

+ * This library is free software; you can redistribute it and/or

+ * modify it under the terms of the GNU Lesser General Public

+ * License as published by the Free Software Foundation; either

+ * version 3 of the License, or any later version.

+ *

+ * This library is distributed in the hope that it will be useful,

+ * but WITHOUT ANY WARRANTY; without even the implied warranty of

+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

+ * Lesser General Public License for more details.

+ *

+ * You should have received a copy of the GNU Lesser General Public

+ * License along with this library; if not, write to the Free Software

+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

+ */

+

+namespace PHPQRCode;

+

+class QRtools {

+

+    //----------------------------------------------------------------------

+    public static function binarize($frame)

+    {

+        $len = count($frame);

+        foreach ($frame as &$frameLine) {

+

+            for($i=0; $i<$len; $i++) {

+                $frameLine[$i] = (ord($frameLine[$i])&1)?'1':'0';

+            }

+        }

+

+        return $frame;

+    }

+

+    //----------------------------------------------------------------------

+    public static function tcpdfBarcodeArray($code, $mode = 'QR,L', $tcPdfVersion = '4.5.037')

+    {

+        $barcode_array = array();

+

+        if (!is_array($mode))

+            $mode = explode(',', $mode);

+

+        $eccLevel = 'L';

+

+        if (count($mode) > 1) {

+            $eccLevel = $mode[1];

+        }

+

+        $qrTab = QRcode::text($code, false, $eccLevel);

+        $size = count($qrTab);

+

+        $barcode_array['num_rows'] = $size;

+        $barcode_array['num_cols'] = $size;

+        $barcode_array['bcode'] = array();

+

+        foreach ($qrTab as $line) {

+            $arrAdd = array();

+            foreach(str_split($line) as $char)

+                $arrAdd[] = ($char=='1')?1:0;

+            $barcode_array['bcode'][] = $arrAdd;

+        }

+

+        return $barcode_array;

+    }

+

+    //----------------------------------------------------------------------

+    public static function clearCache()

+    {

+        self::$frames = array();

+    }

+

+    //----------------------------------------------------------------------

+    public static function buildCache()

+    {

+        QRtools::markTime('before_build_cache');

+

+        $mask = new QRmask();

+        for ($a=1; $a <= Constants::QRSPEC_VERSION_MAX; $a++) {

+            $frame = QRspec::newFrame($a);

+            if (Constants::QR_IMAGE) {

+                $fileName = Constants::QR_CACHE_DIR.'frame_'.$a.'.png';

+                QRimage::png(self::binarize($frame), $fileName, 1, 0);

+            }

+

+            $width = count($frame);

+            $bitMask = array_fill(0, $width, array_fill(0, $width, 0));

+            for ($maskNo=0; $maskNo<8; $maskNo++)

+                $mask->makeMaskNo($maskNo, $width, $frame, $bitMask, true);

+        }

+

+        QRtools::markTime('after_build_cache');

+    }

+

+    //----------------------------------------------------------------------

+    public static function log($outfile, $err)

+    {

+        if (Constants::QR_LOG_DIR !== false) {

+            if ($err != '') {

+                if ($outfile !== false) {

+                    file_put_contents(Constants::QR_LOG_DIR.basename($outfile).'-errors.txt', date('Y-m-d H:i:s').': '.$err, FILE_APPEND);

+                } else {

+                    file_put_contents(Constants::QR_LOG_DIR.'errors.txt', date('Y-m-d H:i:s').': '.$err, FILE_APPEND);

+                }

+            }

+        }

+    }

+

+    //----------------------------------------------------------------------

+    public static function dumpMask($frame)

+    {

+        $width = count($frame);

+        for($y=0;$y<$width;$y++) {

+            for($x=0;$x<$width;$x++) {

+                echo ord($frame[$y][$x]).',';

+            }

+        }

+    }

+

+    //----------------------------------------------------------------------

+    public static function markTime($markerId)

+    {

+        list($usec, $sec) = explode(" ", microtime());

+        $time = ((float)$usec + (float)$sec);

+

+        if (!isset($GLOBALS['qr_time_bench']))

+            $GLOBALS['qr_time_bench'] = array();

+

+        $GLOBALS['qr_time_bench'][$markerId] = $time;

+    }

+

+    //----------------------------------------------------------------------

+    public static function timeBenchmark()

+    {

+        self::markTime('finish');

+

+        $lastTime = 0;

+        $startTime = 0;

+        $p = 0;

+

+        echo '<table cellpadding="3" cellspacing="1">

+                <thead><tr style="border-bottom:1px solid silver"><td colspan="2" style="text-align:center">BENCHMARK</td></tr></thead>

+                <tbody>';

+

+        foreach($GLOBALS['qr_time_bench'] as $markerId=>$thisTime) {

+            if ($p > 0) {

+                echo '<tr><th style="text-align:right">till '.$markerId.': </th><td>'.number_format($thisTime-$lastTime, 6).'s</td></tr>';

+            } else {

+                $startTime = $thisTime;

+            }

+

+            $p++;

+            $lastTime = $thisTime;

+        }

+

+        echo '</tbody><tfoot>

+            <tr style="border-top:2px solid black"><th style="text-align:right">TOTAL: </th><td>'.number_format($lastTime-$startTime, 6).'s</td></tr>

+        </tfoot>

+        </table>';

+    }

+

+}

+

+QRtools::markTime('start');

diff --git a/libs/picodb/LICENSE b/libs/picodb/LICENSE
new file mode 100644
index 00000000..6a362bc1
--- /dev/null
+++ b/libs/picodb/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Frederic Guillot
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/libs/picodb/README.md b/libs/picodb/README.md
new file mode 100644
index 00000000..722e8317
--- /dev/null
+++ b/libs/picodb/README.md
@@ -0,0 +1,672 @@
+PicoDb
+======
+
+PicoDb is a minimalist database query builder for PHP.
+
+Features
+--------
+
+- Easy to use, easy to hack, fast and very lightweight
+- Supported drivers: Sqlite, Mssql, Mysql, Postgresql
+- Requires only PDO
+- Use prepared statements
+- Handle schema migrations
+- Fully unit tested on PHP 5.3, 5.4, 5.5, 5.6 and 7.0
+- License: MIT
+
+Requirements
+------------
+
+- PHP >= 5.3
+- PDO extension
+- Sqlite, Mssql, Mysql or Postgresql
+
+Author
+------
+
+Frédéric Guillot
+
+Documentation
+-------------
+
+### Installation
+
+```bash
+composer require fguillot/picodb @stable
+```
+
+### Database connection
+
+#### Sqlite:
+
+```php
+use PicoDb\Database;
+
+// Sqlite driver
+$db = new Database(['driver' => 'sqlite', 'filename' => ':memory:']);
+```
+
+The Sqlite driver enable foreign keys by default.
+
+#### Microsoft SQL server:
+
+```php
+// Optional attributes:
+// "schema_table" (the default table name is "schema_version")
+
+$db = new Database([
+    'driver' => 'mssql',
+    'hostname' => 'localhost',
+    'username' => 'root',
+    'password' => '',
+    'database' => 'my_db_name',
+]);
+```
+
+Optional attributes:
+
+- schema_table
+
+#### Mysql:
+
+```php
+$db = new Database([
+    'driver' => 'mysql',
+    'hostname' => 'localhost',
+    'username' => 'root',
+    'password' => '',
+    'database' => 'my_db_name',
+    'ssl_key' => '/path/to/client-key.pem',
+    'ssl_cert' => '/path/to/client-cert.pem',
+    'ssl_ca' => '/path/to/ca-cert.pem',
+]);
+```
+
+Optional attributes:
+
+- charset
+- schema_table
+- port
+- ssl_key
+- ssl_cert
+- ssl_key
+
+#### Postgres:
+
+```php
+$db = new Database([
+    'driver' => 'postgres',
+    'hostname' => 'localhost',
+    'username' => 'root',
+    'password' => '',
+    'database' => 'my_db_name',
+]);
+```
+
+Optional attributes:
+
+- port
+- schema_table
+
+#### Connecting from an environment variable:
+
+Let's say you have defined an environment variable:
+
+```bash
+export DATABASE_URL=postgres://user:pass@hostname:6212/db
+```
+
+PicoDb can parse automatically this URL for you:
+
+```php
+use PicoDb\UrlParser;
+use PicoDb\Database;
+
+$db = new Database(UrlParser::getInstance()->getSettings());
+```
+
+#### Connecting from a URL
+
+```php
+use PicoDb\UrlParser;
+use PicoDb\Database;
+
+$db = new Database(UrlParser::getInstance()->getSettings('postgres://user:pass@hostname:6212/db'));
+```
+
+### Execute any SQL query
+
+```php
+$db->execute('CREATE TABLE mytable (column1 TEXT)');
+```
+
+- Returns a `PDOStatement` if successful
+- Returns `false` if there is a duplicate key error
+- Throws a `SQLException` for other errors
+
+### Insertion
+
+```php
+$db->table('mytable')->save(['column1' => 'test']);
+```
+
+or
+
+```php
+$db->table('mytable')->insert(['column1' => 'test']);
+```
+
+### Fetch last inserted id
+
+```php
+$db->getLastId();
+```
+
+### Transactions
+
+```php
+$db->transaction(function ($db) {
+    $db->table('mytable')->save(['column1' => 'foo']);
+    $db->table('mytable')->save(['column1' => 'bar']);
+});
+```
+
+- Returns `true` if the callback returns null
+- Returns the callback return value otherwise
+- Throws an SQLException if something is wrong
+
+or
+
+```php
+$db->startTransaction();
+// Do something...
+$db->closeTransaction();
+
+// Rollback
+$db->cancelTransaction();
+```
+
+### Fetch all data
+
+```php
+$records = $db->table('mytable')->findAll();
+
+foreach ($records as $record) {
+    var_dump($record['column1']);
+}
+```
+
+### Updates
+
+```php
+$db->table('mytable')->eq('id', 1)->save(['column1' => 'hey']);
+```
+
+or
+
+```php
+$db->table('mytable')->eq('id', 1)->update(['column1' => 'hey']);
+```
+
+### Remove records
+
+```php
+$db->table('mytable')->lt('column1', 10)->remove();
+```
+
+### Sorting
+
+```php
+$db->table('mytable')->asc('column1')->findAll();
+```
+
+or
+
+```php
+$db->table('mytable')->desc('column1')->findAll();
+```
+
+or
+
+```php
+$db->table('mytable')->orderBy('column1', 'ASC')->findAll();
+```
+
+Multiple sorting:
+
+```php
+$db->table('mytable')->asc('column1')->desc('column2')->findAll();
+```
+
+### Limit and offset
+
+```php
+$db->table('mytable')->limit(10)->offset(5)->findAll();
+```
+
+### Fetch only some columns
+
+```php
+$db->table('mytable')->columns('column1', 'column2')->findAll();
+```
+
+### Fetch only one column
+
+Many rows:
+
+```php
+$db->table('mytable')->findAllByColumn('column1');
+```
+
+One row:
+
+```php
+$db->table('mytable')->findOneColumn('column1');
+```
+
+### Custom select
+
+```php
+$db->table('mytable')->select(1)->eq('id', 42)->findOne();
+```
+
+### Distinct
+
+```php
+$db->table('mytable')->distinct('columnA')->findOne();
+```
+
+### Group by
+
+```php
+$db->table('mytable')->groupBy('columnA')->findAll();
+```
+
+### Count
+
+```php
+$db->table('mytable')->count();
+```
+
+### Sum
+
+```php
+$db->table('mytable')->sum('columnB');
+```
+
+### Sum column values during update
+
+Add the value 42 to the existing value of the column "mycolumn":
+
+```php
+$db->table('mytable')->sumColumn('mycolumn', 42)->update();
+```
+
+### Increment column
+
+Increment a column value in a single query:
+
+```php
+$db->table('mytable')->eq('another_column', 42)->increment('my_column', 2);
+```
+
+### Decrement column
+
+Decrement a column value in a single query:
+
+```php
+$db->table('mytable')->eq('another_column', 42)->decrement('my_column', 1);
+```
+
+### Exists
+
+Returns true if a record exists otherwise false.
+
+```php
+$db->table('mytable')->eq('column1', 12)->exists();
+```
+
+### Left joins
+
+```php
+// SELECT * FROM mytable LEFT JOIN my_other_table AS t1 ON t1.id=mytable.foreign_key
+$db->table('mytable')->left('my_other_table', 't1', 'id', 'mytable', 'foreign_key')->findAll();
+```
+
+or
+
+```php
+// SELECT * FROM mytable LEFT JOIN my_other_table ON my_other_table.id=mytable.foreign_key
+$db->table('mytable')->join('my_other_table', 'id', 'foreign_key')->findAll();
+```
+
+### Equals condition
+
+```php
+$db->table('mytable')
+   ->eq('column1', 'hey')
+   ->findAll();
+```
+
+### IN condition
+
+```php
+$db->table('mytable')
+       ->in('column1', ['hey', 'bla'])
+       ->findAll();
+```
+
+### IN condition with subquery
+
+```php
+$subquery = $db->table('another_table')->columns('column2')->eq('column3', 'value3');
+
+$db->table('mytable')
+       ->columns('column_5')
+       ->inSubquery('column1', $subquery)
+       ->findAll();
+```
+
+### Like condition
+
+Case-sensitive (only Mysql and Postgres):
+
+```php
+$db->table('mytable')
+   ->like('column1', '%Foo%')
+   ->findAll();
+```
+
+Not case-sensitive:
+
+```php
+$db->table('mytable')
+   ->ilike('column1', '%foo%')
+   ->findAll();
+```
+
+### Lower than condition
+
+```php
+$db->table('mytable')
+   ->lt('column1', 2)
+   ->findAll();
+```
+
+### Lower than or equal condition
+
+```php
+$db->table('mytable')
+   ->lte('column1', 2)
+   ->findAll();
+```
+
+### Greater than condition
+
+```php
+$db->table('mytable')
+   ->gt('column1', 3)
+   ->findAll();
+```
+
+### Greater than or equal condition
+
+```php
+$db->table('mytable')
+    ->gte('column1', 3)
+    ->findAll();
+```
+
+### IS NULL condition
+
+```php
+$db->table('mytable')
+   ->isNull('column1')
+   ->findAll();
+```
+
+### IS NOT NULL condition
+
+```php
+$db->table('mytable')
+   ->notNull('column1')
+   ->findAll();
+```
+
+### Multiple conditions
+
+Add conditions are joined by a `AND`.
+
+```php
+$db->table('mytable')
+    ->like('column2', '%mytable')
+    ->gte('column1', 3)
+    ->findAll();
+```
+
+How to make a OR condition:
+
+```php
+$db->table('mytable')
+    ->beginOr()
+    ->like('column2', '%mytable')
+    ->gte('column1', 3)
+    ->closeOr()
+    ->eq('column5', 'titi')
+    ->findAll();
+```
+
+### Debugging
+
+Log generated queries:
+
+```php
+$db->getStatementHandler()->withLogging();
+```
+
+Mesure each query time:
+
+```php
+$db->getStatementHandler()->withStopWatch();
+```
+
+Get the number of queries executed:
+
+```php
+echo $db->getStatementHandler()->getNbQueries();
+```
+
+Get log messages:
+
+```php
+print_r($db->getLogMessages());
+```
+
+### Large objects (LOBs)
+
+Insert a file:
+
+```php
+$db->largeObject('my_table')->insertFromFile('blobColumn', '/path/to/file', array('id' => 'something'));
+```
+
+Insert from a stream:
+
+```php
+$db->largeObject('my_table')->insertFromStream('blobColumn', $fd, array('id' => 'something'));
+```
+
+Fetch a large object as a stream (Postgres only):
+
+```php
+$fd = $db->largeObject('my_table')->eq('id', 'something')->findOneColumnAsStream('blobColumn');
+```
+
+Fetch a large object as a string:
+
+```php
+echo $db->largeObject('my_table')->eq('id', 'something')->findOneColumnAsString('blobColumn');
+```
+
+Drivers:
+
+- Postgres
+    - Column type: `bytea`
+- Sqlite and Mysql
+    - Column type: `BLOB`
+    - PDO do no not supports the stream feature (returns a string instead)
+
+### Hashtable (key/value store)
+
+How to use a table as a key/value store:
+
+```php
+$db->execute(
+     'CREATE TABLE mytable (
+         column1 TEXT NOT NULL UNIQUE,
+         column2 TEXT default NULL
+     )'
+);
+
+$db->table('mytable')->insert(['column1' => 'option1', 'column2' => 'value1']);
+```
+
+Add/Replace some values:
+
+```php
+$db->hashtable('mytable')
+   ->columnKey('column1')
+   ->columnValue('column2')
+   ->put(['option1' => 'new value', 'option2' => 'value2']));
+```
+
+Get all values:
+
+```php
+$result = $db->hashtable('mytable')->columnKey('column1')->columnValue('column2')->get();
+print_r($result);
+
+Array
+(
+    [option2] => value2
+    [option1] => new value
+)
+```
+
+or
+
+```php
+$result = $db->hashtable('mytable')->getAll('column1', 'column2');
+```
+
+Get a specific value:
+
+```php
+$db->hashtable('mytable')
+   ->columnKey('column1')
+   ->columnValue('column2')
+   ->put(['option3' => 'value3']);
+
+$result = $db->hashtable('mytable')
+             ->columnKey('column1')
+             ->columnValue('column2')
+             ->get('option1', 'option3');
+
+print_r($result);
+
+Array
+(
+    [option1] => new value
+    [option3] => value3
+)
+```
+
+### Schema migrations
+
+#### Define a migration
+
+- Migrations are defined in simple functions inside a namespace named "Schema".
+- An instance of PDO is passed to first argument of the function.
+- Function names has the version number at the end.
+
+Example:
+
+```php
+namespace Schema;
+
+function version_1($pdo)
+{
+    $pdo->exec('
+        CREATE TABLE users (
+            id INTEGER PRIMARY KEY,
+            name TEXT UNIQUE,
+            email TEXT UNIQUE,
+            password TEXT
+        )
+    ');
+}
+
+
+function version_2($pdo)
+{
+    $pdo->exec('
+        CREATE TABLE tags (
+            id INTEGER PRIMARY KEY,
+            name TEXT UNIQUE
+        )
+    ');
+}
+```
+
+#### Run schema update automatically
+
+- The method `check()` execute all migrations until the version specified
+- If an error occurs, the transaction is rollbacked
+- Foreign keys checks are disabled if possible during the migration
+
+Example:
+
+```php
+$last_schema_version = 5;
+
+$db = new PicoDb\Database(array(
+    'driver' => 'sqlite',
+    'filename' => '/tmp/mydb.sqlite'
+));
+
+if ($db->schema()->check($last_schema_version)) {
+
+    // Do something...
+}
+else {
+
+    die('Unable to migrate database schema.');
+}
+```
+
+### Use a singleton to handle database instances
+
+Setup a new instance:
+
+```php
+PicoDb\Database::setInstance('myinstance', function() {
+
+    $db = new PicoDb\Database(array(
+        'driver' => 'sqlite',
+        'filename' => DB_FILENAME
+    ));
+
+    if ($db->schema()->check(DB_VERSION)) {
+        return $db;
+    }
+    else {
+        die('Unable to migrate database schema.');
+    }
+});
+```
+
+Get this instance anywhere in your code:
+
+```php
+PicoDb\Database::getInstance('myinstance')->table(...)
+```
diff --git a/libs/picodb/lib/PicoDb/Builder/BaseBuilder.php b/libs/picodb/lib/PicoDb/Builder/BaseBuilder.php
new file mode 100644
index 00000000..e075ae3c
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/Builder/BaseBuilder.php
@@ -0,0 +1,86 @@
+<?php
+
+namespace PicoDb\Builder;
+
+use PicoDb\Database;
+
+/**
+ * Class InsertBuilder
+ *
+ * @package PicoDb\Builder
+ * @author  Frederic Guillot
+ */
+abstract class BaseBuilder
+{
+    /**
+     * @var Database
+     */
+    protected $db;
+
+    /**
+     * @var ConditionBuilder
+     */
+    protected $conditionBuilder;
+
+    /**
+     * @var string
+     */
+    protected $table = '';
+
+    /**
+     * @var string[]
+     */
+    protected $columns = array();
+
+    /**
+     * InsertBuilder constructor
+     *
+     * @param Database         $db
+     * @param ConditionBuilder $condition
+     */
+    public function __construct(Database $db, ConditionBuilder $condition)
+    {
+        $this->db = $db;
+        $this->conditionBuilder = $condition;
+    }
+
+    /**
+     * Get object instance
+     *
+     * @static
+     * @access public
+     * @param  Database         $db
+     * @param  ConditionBuilder $condition
+     * @return static
+     */
+    public static function getInstance(Database $db, ConditionBuilder $condition)
+    {
+        return new static($db, $condition);
+    }
+
+    /**
+     * Set table name
+     *
+     * @access public
+     * @param  string $table
+     * @return $this
+     */
+    public function withTable($table)
+    {
+        $this->table = $table;
+        return $this;
+    }
+
+    /**
+     * Set columns name
+     *
+     * @access public
+     * @param  string[] $columns
+     * @return $this
+     */
+    public function withColumns(array $columns)
+    {
+        $this->columns = $columns;
+        return $this;
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/Builder/ConditionBuilder.php b/libs/picodb/lib/PicoDb/Builder/ConditionBuilder.php
new file mode 100644
index 00000000..b0465b6e
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/Builder/ConditionBuilder.php
@@ -0,0 +1,377 @@
+<?php
+
+namespace PicoDb\Builder;
+
+use PicoDb\Database;
+use PicoDb\Table;
+
+/**
+ * Handle SQL conditions
+ *
+ * @package PicoDb\Builder
+ * @author  Frederic Guillot
+ */
+class ConditionBuilder
+{
+    /**
+     * Database instance
+     *
+     * @access private
+     * @var    Database
+     */
+    private $db;
+
+    /**
+     * Condition values
+     *
+     * @access private
+     * @var    array
+     */
+    private $values = array();
+
+    /**
+     * SQL AND conditions
+     *
+     * @access private
+     * @var    string[]
+     */
+    private $conditions = array();
+
+    /**
+     * SQL OR conditions
+     *
+     * @access private
+     * @var    OrConditionBuilder[]
+     */
+    private $orConditions = array();
+
+    /**
+     * SQL condition offset
+     *
+     * @access private
+     * @var int
+     */
+    private $orConditionOffset = 0;
+
+    /**
+     * Constructor
+     *
+     * @access public
+     * @param  Database  $db
+     */
+    public function __construct(Database $db)
+    {
+        $this->db = $db;
+    }
+
+    /**
+     * Build the SQL condition
+     *
+     * @access public
+     * @return string
+     */
+    public function build()
+    {
+        return empty($this->conditions) ? '' : ' WHERE '.implode(' AND ', $this->conditions);
+    }
+
+    /**
+     * Get condition values
+     *
+     * @access public
+     * @return array
+     */
+    public function getValues()
+    {
+        return $this->values;
+    }
+
+    /**
+     * Returns true if there is some conditions
+     *
+     * @access public
+     * @return boolean
+     */
+    public function hasCondition()
+    {
+        return ! empty($this->conditions);
+    }
+
+    /**
+     * Add custom condition
+     *
+     * @access public
+     * @param  string  $sql
+     */
+    public function addCondition($sql)
+    {
+        if ($this->orConditionOffset > 0) {
+            $this->orConditions[$this->orConditionOffset]->withCondition($sql);
+        }
+        else {
+            $this->conditions[] = $sql;
+        }
+    }
+
+    /**
+     * Start OR condition
+     *
+     * @access public
+     */
+    public function beginOr()
+    {
+        $this->orConditionOffset++;
+        $this->orConditions[$this->orConditionOffset] = new OrConditionBuilder();
+    }
+
+    /**
+     * Close OR condition
+     *
+     * @access public
+     */
+    public function closeOr()
+    {
+        $condition = $this->orConditions[$this->orConditionOffset]->build();
+        $this->orConditionOffset--;
+
+        if ($this->orConditionOffset > 0) {
+            $this->orConditions[$this->orConditionOffset]->withCondition($condition);
+        } else {
+            $this->conditions[] = $condition;
+        }
+    }
+
+    /**
+     * Equal condition
+     *
+     * @access public
+     * @param  string   $column
+     * @param  mixed    $value
+     */
+    public function eq($column, $value)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' = ?');
+        $this->values[] = $value;
+    }
+
+    /**
+     * Not equal condition
+     *
+     * @access public
+     * @param  string   $column
+     * @param  mixed    $value
+     */
+    public function neq($column, $value)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' != ?');
+        $this->values[] = $value;
+    }
+
+    /**
+     * IN condition
+     *
+     * @access public
+     * @param  string   $column
+     * @param  array    $values
+     */
+    public function in($column, array $values)
+    {
+        if (! empty($values)) {
+            $this->addCondition($this->db->escapeIdentifier($column).' IN ('.implode(', ', array_fill(0, count($values), '?')).')');
+            $this->values = array_merge($this->values, $values);
+        }
+    }
+
+    /**
+     * IN condition with a subquery
+     *
+     * @access public
+     * @param  string   $column
+     * @param  Table    $subquery
+     */
+    public function inSubquery($column, Table $subquery)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' IN ('.$subquery->buildSelectQuery().')');
+        $this->values = array_merge($this->values, $subquery->getConditionBuilder()->getValues());
+    }
+
+    /**
+     * NOT IN condition
+     *
+     * @access public
+     * @param  string   $column
+     * @param  array    $values
+     */
+    public function notIn($column, array $values)
+    {
+        if (! empty($values)) {
+            $this->addCondition($this->db->escapeIdentifier($column).' NOT IN ('.implode(', ', array_fill(0, count($values), '?')).')');
+            $this->values = array_merge($this->values, $values);
+        }
+    }
+
+    /**
+     * NOT IN condition with a subquery
+     *
+     * @access public
+     * @param  string   $column
+     * @param  Table    $subquery
+     */
+    public function notInSubquery($column, Table $subquery)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' NOT IN ('.$subquery->buildSelectQuery().')');
+        $this->values = array_merge($this->values, $subquery->getConditionBuilder()->getValues());
+    }
+
+    /**
+     * LIKE condition
+     *
+     * @access public
+     * @param  string   $column
+     * @param  mixed    $value
+     */
+    public function like($column, $value)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' '.$this->db->getDriver()->getOperator('LIKE').' ?');
+        $this->values[] = $value;
+    }
+
+    /**
+     * ILIKE condition
+     *
+     * @access public
+     * @param  string   $column
+     * @param  mixed    $value
+     */
+    public function ilike($column, $value)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' '.$this->db->getDriver()->getOperator('ILIKE').' ?');
+        $this->values[] = $value;
+    }
+
+    /**
+     * Greater than condition
+     *
+     * @access public
+     * @param  string   $column
+     * @param  mixed    $value
+     */
+    public function gt($column, $value)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' > ?');
+        $this->values[] = $value;
+    }
+
+    /**
+     * Greater than condition with subquery
+     *
+     * @access public
+     * @param  string   $column
+     * @param  Table    $subquery
+     */
+    public function gtSubquery($column, Table $subquery)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' > ('.$subquery->buildSelectQuery().')');
+        $this->values = array_merge($this->values, $subquery->getConditionBuilder()->getValues());
+    }
+
+    /**
+     * Lower than condition
+     *
+     * @access public
+     * @param  string   $column
+     * @param  mixed    $value
+     */
+    public function lt($column, $value)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' < ?');
+        $this->values[] = $value;
+    }
+
+    /**
+     * Lower than condition with subquery
+     *
+     * @access public
+     * @param  string   $column
+     * @param  Table    $subquery
+     */
+    public function ltSubquery($column, Table $subquery)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' < ('.$subquery->buildSelectQuery().')');
+        $this->values = array_merge($this->values, $subquery->getConditionBuilder()->getValues());
+    }
+
+    /**
+     * Greater than or equals condition
+     *
+     * @access public
+     * @param  string   $column
+     * @param  mixed    $value
+     */
+    public function gte($column, $value)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' >= ?');
+        $this->values[] = $value;
+    }
+
+    /**
+     * Greater than or equal condition with subquery
+     *
+     * @access public
+     * @param  string   $column
+     * @param  Table    $subquery
+     */
+    public function gteSubquery($column, Table $subquery)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' >= ('.$subquery->buildSelectQuery().')');
+        $this->values = array_merge($this->values, $subquery->getConditionBuilder()->getValues());
+    }
+
+    /**
+     * Lower than or equals condition
+     *
+     * @access public
+     * @param  string   $column
+     * @param  mixed    $value
+     */
+    public function lte($column, $value)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' <= ?');
+        $this->values[] = $value;
+    }
+
+    /**
+     * Lower than or equal condition with subquery
+     *
+     * @access public
+     * @param  string   $column
+     * @param  Table    $subquery
+     */
+    public function lteSubquery($column, Table $subquery)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' <= ('.$subquery->buildSelectQuery().')');
+        $this->values = array_merge($this->values, $subquery->getConditionBuilder()->getValues());
+    }
+
+    /**
+     * IS NULL condition
+     *
+     * @access public
+     * @param  string   $column
+     */
+    public function isNull($column)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' IS NULL');
+    }
+
+    /**
+     * IS NOT NULL condition
+     *
+     * @access public
+     * @param  string   $column
+     */
+    public function notNull($column)
+    {
+        $this->addCondition($this->db->escapeIdentifier($column).' IS NOT NULL');
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/Builder/InsertBuilder.php b/libs/picodb/lib/PicoDb/Builder/InsertBuilder.php
new file mode 100644
index 00000000..9d06c405
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/Builder/InsertBuilder.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace PicoDb\Builder;
+
+/**
+ * Class InsertBuilder
+ *
+ * @package PicoDb\Builder
+ * @author  Frederic Guillot
+ */
+class InsertBuilder extends BaseBuilder
+{
+    /**
+     * Build SQL
+     *
+     * @access public
+     * @return string
+     */
+    public function build()
+    {
+        $columns = array();
+        $placeholders = array();
+
+        foreach ($this->columns as $column) {
+            $columns[] = $this->db->escapeIdentifier($column);
+            $placeholders[] = ':'.$column;
+        }
+
+        return sprintf(
+            'INSERT INTO %s (%s) VALUES (%s)',
+            $this->db->escapeIdentifier($this->table),
+            implode(', ', $columns),
+            implode(', ', $placeholders)
+        );
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/Builder/OrConditionBuilder.php b/libs/picodb/lib/PicoDb/Builder/OrConditionBuilder.php
new file mode 100644
index 00000000..0defeaf4
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/Builder/OrConditionBuilder.php
@@ -0,0 +1,43 @@
+<?php
+
+namespace PicoDb\Builder;
+
+/**
+ * Class OrConditionBuilder
+ *
+ * @package PicoDb\Builder
+ * @author  Frederic Guillot
+ */
+class OrConditionBuilder
+{
+    /**
+     * List of SQL conditions
+     *
+     * @access protected
+     * @var string[]
+     */
+    protected $conditions = array();
+
+    /**
+     * Add new condition
+     *
+     * @access public
+     * @param  string $condition
+     * @return $this
+     */
+    public function withCondition($condition) {
+        $this->conditions[] = $condition;
+        return $this;
+    }
+
+    /**
+     * Build SQL
+     *
+     * @access public
+     * @return string
+     */
+    public function build()
+    {
+        return '('.implode(' OR ', $this->conditions).')';
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/Builder/UpdateBuilder.php b/libs/picodb/lib/PicoDb/Builder/UpdateBuilder.php
new file mode 100644
index 00000000..300ea9b0
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/Builder/UpdateBuilder.php
@@ -0,0 +1,56 @@
+<?php
+
+namespace PicoDb\Builder;
+
+/**
+ * Class UpdateBuilder
+ *
+ * @package PicoDb\Builder
+ * @author  Frederic Guillot
+ */
+class UpdateBuilder extends BaseBuilder
+{
+    /**
+     * @var string[]
+     */
+    protected $sumColumns = array();
+
+    /**
+     * Set columns name
+     *
+     * @access public
+     * @param  string[] $columns
+     * @return $this
+     */
+    public function withSumColumns(array $columns)
+    {
+        $this->sumColumns = $columns;
+        return $this;
+    }
+
+    /**
+     * Build SQL
+     *
+     * @access public
+     * @return string
+     */
+    public function build()
+    {
+        $columns = array();
+
+        foreach ($this->columns as $column) {
+            $columns[] = $this->db->escapeIdentifier($column).'=?';
+        }
+
+        foreach ($this->sumColumns as $column) {
+            $columns[] = $this->db->escapeIdentifier($column).'='.$this->db->escapeIdentifier($column).' + ?';
+        }
+
+        return sprintf(
+            'UPDATE %s SET %s %s',
+            $this->db->escapeIdentifier($this->table),
+            implode(', ', $columns),
+            $this->conditionBuilder->build()
+        );
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/Database.php b/libs/picodb/lib/PicoDb/Database.php
new file mode 100644
index 00000000..22c9d2fb
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/Database.php
@@ -0,0 +1,370 @@
+<?php
+
+namespace PicoDb;
+
+use Closure;
+use PDOException;
+use LogicException;
+use PicoDb\Driver\Mssql;
+use PicoDb\Driver\Sqlite;
+use PicoDb\Driver\Mysql;
+use PicoDb\Driver\Postgres;
+
+/**
+ * Database
+ *
+ * @package PicoDb
+ * @author  Frederic Guillot
+ */
+class Database
+{
+    /**
+     * Database instances
+     *
+     * @static
+     * @access private
+     * @var array
+     */
+    private static $instances = array();
+
+    /**
+     * Statement object
+     *
+     * @access protected
+     * @var StatementHandler
+     */
+    protected $statementHandler;
+
+    /**
+     * Queries logs
+     *
+     * @access private
+     * @var array
+     */
+    private $logs = array();
+
+    /**
+     * Driver instance
+     *
+     * @access private
+     */
+    private $driver;
+
+    /**
+     * Initialize the driver
+     *
+     * @access public
+     * @param  array   $settings
+     */
+    public function __construct(array $settings = array())
+    {
+        $this->driver = DriverFactory::getDriver($settings);
+        $this->statementHandler = new StatementHandler($this);
+    }
+
+    /**
+     * Destructor
+     *
+     * @access public
+     */
+    public function __destruct()
+    {
+        $this->closeConnection();
+    }
+
+    /**
+     * Register a new database instance
+     *
+     * @static
+     * @access public
+     * @param  string    $name        Instance name
+     * @param  Closure   $callback    Callback
+     */
+    public static function setInstance($name, Closure $callback)
+    {
+        self::$instances[$name] = $callback;
+    }
+
+    /**
+     * Get a database instance
+     *
+     * @static
+     * @access public
+     * @param  string    $name   Instance name
+     * @return Database
+     */
+    public static function getInstance($name)
+    {
+        if (! isset(self::$instances[$name])) {
+            throw new LogicException('No database instance created with that name');
+        }
+
+        if (is_callable(self::$instances[$name])) {
+            self::$instances[$name] = call_user_func(self::$instances[$name]);
+        }
+
+        return self::$instances[$name];
+    }
+
+    /**
+     * Add a log message
+     *
+     * @access public
+     * @param  mixed $message
+     * @return Database
+     */
+    public function setLogMessage($message)
+    {
+        $this->logs[] = is_array($message) ? var_export($message, true) : $message;
+        return $this;
+    }
+
+    /**
+     * Add many log messages
+     *
+     * @access public
+     * @param  array $messages
+     * @return Database
+     */
+    public function setLogMessages(array $messages)
+    {
+        foreach ($messages as $message) {
+            $this->setLogMessage($message);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get all queries logs
+     *
+     * @access public
+     * @return array
+     */
+    public function getLogMessages()
+    {
+        return $this->logs;
+    }
+
+    /**
+     * Get the PDO connection
+     *
+     * @access public
+     * @return \PDO
+     */
+    public function getConnection()
+    {
+        return $this->driver->getConnection();
+    }
+
+    /**
+     * Get the Driver instance
+     *
+     * @access public
+     * @return Mssql|Sqlite|Postgres|Mysql
+     */
+    public function getDriver()
+    {
+        return $this->driver;
+    }
+
+    /**
+     * Get the last inserted id
+     *
+     * @access public
+     * @return integer
+     */
+    public function getLastId()
+    {
+        return (int) $this->driver->getLastId();
+    }
+
+    /**
+     * Get statement object
+     *
+     * @access public
+     * @return StatementHandler
+     */
+    public function getStatementHandler()
+    {
+        return $this->statementHandler;
+    }
+
+    /**
+     * Release the PDO connection
+     *
+     * @access public
+     */
+    public function closeConnection()
+    {
+        $this->driver->closeConnection();
+    }
+
+    /**
+     * Escape an identifier (column, table name...)
+     *
+     * @access public
+     * @param  string    $value    Value
+     * @param  string    $table    Table name
+     * @return string
+     */
+    public function escapeIdentifier($value, $table = '')
+    {
+        // Do not escape custom query
+        if (strpos($value, '.') !== false || strpos($value, ' ') !== false) {
+            return $value;
+        }
+
+        if (! empty($table)) {
+            return $this->driver->escape($table).'.'.$this->driver->escape($value);
+        }
+
+        return $this->driver->escape($value);
+    }
+
+    /**
+     * Escape an identifier list
+     *
+     * @access public
+     * @param  array     $identifiers  List of identifiers
+     * @param  string    $table        Table name
+     * @return string[]
+     */
+    public function escapeIdentifierList(array $identifiers, $table = '')
+    {
+        foreach ($identifiers as $key => $value) {
+            $identifiers[$key] = $this->escapeIdentifier($value, $table);
+        }
+
+        return $identifiers;
+    }
+
+    /**
+     * Execute a prepared statement
+     *
+     * Note: returns false on duplicate keys instead of SQLException
+     *
+     * @access public
+     * @param  string    $sql      SQL query
+     * @param  array     $values   Values
+     * @return \PDOStatement|false
+     */
+    public function execute($sql, array $values = array())
+    {
+        return $this->statementHandler
+            ->withSql($sql)
+            ->withPositionalParams($values)
+            ->execute();
+    }
+
+    /**
+     * Run a transaction
+     *
+     * @access public
+     * @param  Closure    $callback     Callback
+     * @return mixed
+     */
+    public function transaction(Closure $callback)
+    {
+        try {
+
+            $this->startTransaction();
+            $result = $callback($this);
+            $this->closeTransaction();
+
+            return $result === null ? true : $result;
+        } catch (PDOException $e) {
+            return $this->statementHandler->handleSqlError($e);
+        }
+    }
+
+    /**
+     * Begin a transaction
+     *
+     * @access public
+     */
+    public function startTransaction()
+    {
+        if (! $this->getConnection()->inTransaction()) {
+            $this->getConnection()->beginTransaction();
+        }
+    }
+
+    /**
+     * Commit a transaction
+     *
+     * @access public
+     */
+    public function closeTransaction()
+    {
+        if ($this->getConnection()->inTransaction()) {
+            $this->getConnection()->commit();
+        }
+    }
+
+    /**
+     * Rollback a transaction
+     *
+     * @access public
+     */
+    public function cancelTransaction()
+    {
+        if ($this->getConnection()->inTransaction()) {
+            $this->getConnection()->rollBack();
+        }
+    }
+
+    /**
+     * Get a table object
+     *
+     * @access public
+     * @param  string $table
+     * @return Table
+     */
+    public function table($table)
+    {
+        return new Table($this, $table);
+    }
+
+    /**
+     * Get a hashtable object
+     *
+     * @access public
+     * @param  string $table
+     * @return Hashtable
+     */
+    public function hashtable($table)
+    {
+        return new Hashtable($this, $table);
+    }
+
+    /**
+     * Get a LOB object
+     *
+     * @access public
+     * @param  string $table
+     * @return LargeObject
+     */
+    public function largeObject($table)
+    {
+        return new LargeObject($this, $table);
+    }
+
+    /**
+     * Get a schema object
+     *
+     * @access public
+     * @param  string $namespace
+     * @return Schema
+     */
+    public function schema($namespace = null)
+    {
+        $schema = new Schema($this);
+
+        if ($namespace !== null) {
+            $schema->setNamespace($namespace);
+        }
+
+        return $schema;
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/Driver/Base.php b/libs/picodb/lib/PicoDb/Driver/Base.php
new file mode 100644
index 00000000..790cd623
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/Driver/Base.php
@@ -0,0 +1,234 @@
+<?php
+
+namespace PicoDb\Driver;
+
+use PDO;
+use LogicException;
+use PDOException;
+
+/**
+ * Base Driver class
+ *
+ * @package PicoDb\Driver
+ * @author  Frederic Guillot
+ */
+abstract class Base
+{
+    /**
+     * List of required settings options
+     *
+     * @access protected
+     * @var array
+     */
+    protected $requiredAttributes = array();
+
+    /**
+     * PDO connection
+     *
+     * @access protected
+     * @var PDO
+     */
+    protected $pdo = null;
+
+    /**
+     * Create a new PDO connection
+     *
+     * @abstract
+     * @access public
+     * @param  array   $settings
+     */
+    abstract public function createConnection(array $settings);
+
+    /**
+     * Enable foreign keys
+     *
+     * @abstract
+     * @access public
+     */
+    abstract public function enableForeignKeys();
+
+    /**
+     * Disable foreign keys
+     *
+     * @abstract
+     * @access public
+     */
+    abstract public function disableForeignKeys();
+
+    /**
+     * Return true if the error code is a duplicate key
+     *
+     * @abstract
+     * @access public
+     * @param  integer  $code
+     * @return boolean
+     */
+    abstract public function isDuplicateKeyError($code);
+
+    /**
+     * Escape identifier
+     *
+     * @abstract
+     * @access public
+     * @param  string  $identifier
+     * @return string
+     */
+    abstract public function escape($identifier);
+
+    /**
+     * Get non standard operator
+     *
+     * @abstract
+     * @access public
+     * @param  string  $operator
+     * @return string
+     */
+    abstract public function getOperator($operator);
+
+    /**
+     * Get last inserted id
+     *
+     * @abstract
+     * @access public
+     * @return integer
+     */
+    abstract public function getLastId();
+
+    /**
+     * Get current schema version
+     *
+     * @abstract
+     * @access public
+     * @return integer
+     */
+    abstract public function getSchemaVersion();
+
+    /**
+     * Set current schema version
+     *
+     * @abstract
+     * @access public
+     * @param  integer  $version
+     */
+    abstract public function setSchemaVersion($version);
+
+    /**
+     * Constructor
+     *
+     * @access public
+     * @param  array   $settings
+     */
+    public function __construct(array $settings)
+    {
+        foreach ($this->requiredAttributes as $attribute) {
+            if (! isset($settings[$attribute])) {
+                throw new LogicException('This configuration parameter is missing: "'.$attribute.'"');
+            }
+        }
+
+        $this->createConnection($settings);
+        $this->pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+    }
+
+    /**
+     * Get the PDO connection
+     *
+     * @access public
+     * @return PDO
+     */
+    public function getConnection()
+    {
+        return $this->pdo;
+    }
+
+    /**
+     * Release the PDO connection
+     *
+     * @access public
+     */
+    public function closeConnection()
+    {
+        $this->pdo = null;
+    }
+
+    /**
+     * Upsert for a key/value variable
+     *
+     * @access public
+     * @param  string  $table
+     * @param  string  $keyColumn
+     * @param  string  $valueColumn
+     * @param  array   $dictionary
+     * @return bool    False on failure
+     */
+    public function upsert($table, $keyColumn, $valueColumn, array $dictionary)
+    {
+        try {
+            $this->pdo->beginTransaction();
+
+            foreach ($dictionary as $key => $value) {
+
+                $rq = $this->pdo->prepare('SELECT 1 FROM '.$this->escape($table).' WHERE '.$this->escape($keyColumn).'=?');
+                $rq->execute(array($key));
+
+                if ($rq->fetchColumn()) {
+                    $rq = $this->pdo->prepare('UPDATE '.$this->escape($table).' SET '.$this->escape($valueColumn).'=? WHERE '.$this->escape($keyColumn).'=?');
+                    $rq->execute(array($value, $key));
+                }
+                else {
+                    $rq = $this->pdo->prepare('INSERT INTO '.$this->escape($table).' ('.$this->escape($keyColumn).', '.$this->escape($valueColumn).') VALUES (?, ?)');
+                    $rq->execute(array($key, $value));
+                }
+            }
+
+            $this->pdo->commit();
+
+            return true;
+        }
+        catch (PDOException $e) {
+            $this->pdo->rollBack();
+            return false;
+        }
+    }
+
+    /**
+     * Run EXPLAIN command
+     *
+     * @access public
+     * @param  string $sql
+     * @param  array  $values
+     * @return array
+     */
+    public function explain($sql, array $values)
+    {
+        return $this->getConnection()->query('EXPLAIN '.$this->getSqlFromPreparedStatement($sql, $values))->fetchAll(PDO::FETCH_ASSOC);
+    }
+
+    /**
+     * Replace placeholder with values in prepared statement
+     *
+     * @access protected
+     * @param  string $sql
+     * @param  array  $values
+     * @return string
+     */
+    protected function getSqlFromPreparedStatement($sql, array $values)
+    {
+        foreach ($values as $value) {
+            $sql = substr_replace($sql, "'$value'", strpos($sql, '?'), 1);
+        }
+
+        return $sql;
+    }
+
+    /**
+     * Get database version
+     *
+     * @access public
+     * @return array
+     */
+    public function getDatabaseVersion()
+    {
+        return $this->getConnection()->query('SELECT VERSION()')->fetchColumn();
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/Driver/Mssql.php b/libs/picodb/lib/PicoDb/Driver/Mssql.php
new file mode 100644
index 00000000..83e75af2
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/Driver/Mssql.php
@@ -0,0 +1,178 @@
+<?php
+
+namespace PicoDb\Driver;
+
+use PDO;
+
+/**
+ * Microsoft SQL Server Driver
+ *
+ * @package PicoDb\Driver
+ * @author  Algy Taylor <thomas.taylor@cmft.nhs.uk>
+ */
+class Mssql extends Base
+{
+    /**
+     * List of required settings options
+     *
+     * @access protected
+     * @var array
+     */
+    protected $requiredAttributes = array(
+        'hostname',
+        'username',
+        'password',
+        'database',
+    );
+
+    /**
+     * Table to store the schema version
+     *
+     * @access private
+     * @var array
+     */
+    private $schemaTable = 'schema_version';
+
+    /**
+     * Create a new PDO connection
+     *
+     * @access public
+     * @param  array   $settings
+     */
+    public function createConnection(array $settings)
+    {
+        $dsn = 'sqlsrv:Server=' . $settings['hostname'] . ';Database=' . $settings['database'];
+
+        if (! empty($settings['port'])) {
+            $dsn .= ';port=' . $settings['port'];
+        }
+
+        $this->pdo = new PDO($dsn, $settings['username'], $settings['password']);
+
+        if (isset($settings['schema_table'])) {
+            $this->schemaTable = $settings['schema_table'];
+        }
+    }
+
+    /**
+     * Enable foreign keys
+     *
+     * @access public
+     */
+    public function enableForeignKeys()
+    {
+        $this->pdo->exec('EXEC sp_MSforeachtable @command1="ALTER TABLE ? CHECK CONSTRAINT ALL"; GO;');
+    }
+
+    /**
+     * Disable foreign keys
+     *
+     * @access public
+     */
+    public function disableForeignKeys()
+    {
+        $this->pdo->exec('EXEC sp_MSforeachtable @command1="ALTER TABLE ? NOCHECK CONSTRAINT ALL"; GO;');
+    }
+
+    /**
+     * Return true if the error code is a duplicate key
+     *
+     * @access public
+     * @param  integer  $code
+     * @return boolean
+     */
+    public function isDuplicateKeyError($code)
+    {
+        return $code == 2601;
+    }
+
+    /**
+     * Escape identifier
+     *
+     * https://msdn.microsoft.com/en-us/library/ms175874.aspx
+     *
+     * @access public
+     * @param  string  $identifier
+     * @return string
+     */
+    public function escape($identifier)
+    {
+        return '['.$identifier.']';
+    }
+
+    /**
+     * Get non standard operator
+     *
+     * @access public
+     * @param  string  $operator
+     * @return string
+     */
+    public function getOperator($operator)
+    {
+        if ($operator === 'LIKE' || $operator === 'ILIKE') {
+            return 'LIKE';
+        }
+
+        return '';
+    }
+
+    /**
+     * Get last inserted id
+     *
+     * @access public
+     * @return integer
+     */
+    public function getLastId()
+    {
+        return $this->pdo->lastInsertId();
+    }
+
+    /**
+     * Get current schema version
+     *
+     * @access public
+     * @return integer
+     */
+    public function getSchemaVersion()
+    {
+        $this->pdo->exec("CREATE TABLE IF NOT EXISTS [".$this->schemaTable."] ([version] INT DEFAULT '0')");
+
+        $rq = $this->pdo->prepare('SELECT [version] FROM ['.$this->schemaTable.']');
+        $rq->execute();
+        $result = $rq->fetchColumn();
+
+        if ($result !== false) {
+            return (int) $result;
+        }
+        else {
+            $this->pdo->exec('INSERT INTO ['.$this->schemaTable.'] VALUES(0)');
+        }
+
+        return 0;
+    }
+
+    /**
+     * Set current schema version
+     *
+     * @access public
+     * @param  integer  $version
+     */
+    public function setSchemaVersion($version)
+    {
+        $rq = $this->pdo->prepare('UPDATE ['.$this->schemaTable.'] SET [version]=?');
+        $rq->execute(array($version));
+    }
+
+    /**
+     * Run EXPLAIN command
+     *
+     * @param  string $sql
+     * @param  array  $values
+     * @return array
+     */
+    public function explain($sql, array $values)
+    {
+        $this->getConnection()->exec('SET SHOWPLAN_ALL ON');
+        return $this->getConnection()->query($this->getSqlFromPreparedStatement($sql, $values))->fetchAll(PDO::FETCH_ASSOC);
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/Driver/Mysql.php b/libs/picodb/lib/PicoDb/Driver/Mysql.php
new file mode 100644
index 00000000..7e5cce0a
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/Driver/Mysql.php
@@ -0,0 +1,268 @@
+<?php
+
+namespace PicoDb\Driver;
+
+use PDO;
+use PDOException;
+
+/**
+ * Mysql Driver
+ *
+ * @package PicoDb\Driver
+ * @author  Frederic Guillot
+ */
+class Mysql extends Base
+{
+    /**
+     * List of required settings options
+     *
+     * @access protected
+     * @var array
+     */
+    protected $requiredAttributes = array(
+        'hostname',
+        'username',
+        'password',
+        'database',
+    );
+
+    /**
+     * Table to store the schema version
+     *
+     * @access private
+     * @var array
+     */
+    private $schemaTable = 'schema_version';
+
+    /**
+     * Create a new PDO connection
+     *
+     * @access public
+     * @param  array   $settings
+     */
+    public function createConnection(array $settings)
+    {
+        $this->pdo = new PDO(
+            $this->buildDsn($settings),
+            $settings['username'],
+            $settings['password'],
+            $this->buildOptions($settings)
+        );
+
+        if (isset($settings['schema_table'])) {
+            $this->schemaTable = $settings['schema_table'];
+        }
+    }
+
+    /**
+     * Build connection DSN
+     *
+     * @access protected
+     * @param  array $settings
+     * @return string
+     */
+    protected function buildDsn(array $settings)
+    {
+        $charset = empty($settings['charset']) ? 'utf8' : $settings['charset'];
+        $dsn = 'mysql:host='.$settings['hostname'].';dbname='.$settings['database'].';charset='.$charset;
+
+        if (! empty($settings['port'])) {
+            $dsn .= ';port='.$settings['port'];
+        }
+
+        return $dsn;
+    }
+
+    /**
+     * Build connection options
+     *
+     * @access protected
+     * @param  array $settings
+     * @return array
+     */
+    protected function buildOptions(array $settings)
+    {
+        $options = array(
+            PDO::MYSQL_ATTR_INIT_COMMAND => 'SET sql_mode = STRICT_ALL_TABLES',
+        );
+
+        if (! empty($settings['ssl_key'])) {
+            $options[PDO::MYSQL_ATTR_SSL_KEY] = $settings['ssl_key'];
+        }
+
+        if (! empty($settings['ssl_cert'])) {
+            $options[PDO::MYSQL_ATTR_SSL_CERT] = $settings['ssl_cert'];
+        }
+
+        if (! empty($settings['ssl_ca'])) {
+            $options[PDO::MYSQL_ATTR_SSL_CA] = $settings['ssl_ca'];
+        }
+
+        if (! empty($settings['persistent'])) {
+            $options[PDO::ATTR_PERSISTENT] = $settings['persistent'];
+        }
+
+        if (! empty($settings['timeout'])) {
+            $options[PDO::ATTR_TIMEOUT] = $settings['timeout'];
+        }
+
+        if (isset($settings['verify_server_cert'])) {
+            $options[PDO::MYSQL_ATTR_SSL_VERIFY_SERVER_CERT] = $settings['verify_server_cert'];
+        }
+
+        if (! empty($settings['case'])) {
+            $options[PDO::ATTR_CASE] = $settings['case'];
+        }
+
+        return $options;
+    }
+
+    /**
+     * Enable foreign keys
+     *
+     * @access public
+     */
+    public function enableForeignKeys()
+    {
+        $this->pdo->exec('SET FOREIGN_KEY_CHECKS=1');
+    }
+
+    /**
+     * Disable foreign keys
+     *
+     * @access public
+     */
+    public function disableForeignKeys()
+    {
+        $this->pdo->exec('SET FOREIGN_KEY_CHECKS=0');
+    }
+
+    /**
+     * Return true if the error code is a duplicate key
+     *
+     * @access public
+     * @param  integer  $code
+     * @return boolean
+     */
+    public function isDuplicateKeyError($code)
+    {
+        return $code == 23000;
+    }
+
+    /**
+     * Escape identifier
+     *
+     * @access public
+     * @param  string  $identifier
+     * @return string
+     */
+    public function escape($identifier)
+    {
+        return '`'.$identifier.'`';
+    }
+
+    /**
+     * Get non standard operator
+     *
+     * @access public
+     * @param  string  $operator
+     * @return string
+     */
+    public function getOperator($operator)
+    {
+        if ($operator === 'LIKE') {
+            return 'LIKE BINARY';
+        }
+        else if ($operator === 'ILIKE') {
+            return 'LIKE';
+        }
+
+        return '';
+    }
+
+    /**
+     * Get last inserted id
+     *
+     * @access public
+     * @return integer
+     */
+    public function getLastId()
+    {
+        return $this->pdo->lastInsertId();
+    }
+
+    /**
+     * Get current schema version
+     *
+     * @access public
+     * @return integer
+     */
+    public function getSchemaVersion()
+    {
+        $this->pdo->exec("CREATE TABLE IF NOT EXISTS `".$this->schemaTable."` (`version` INT DEFAULT '0') ENGINE=InnoDB CHARSET=utf8");
+
+        $rq = $this->pdo->prepare('SELECT `version` FROM `'.$this->schemaTable.'`');
+        $rq->execute();
+        $result = $rq->fetchColumn();
+
+        if ($result !== false) {
+            return (int) $result;
+        }
+        else {
+            $this->pdo->exec('INSERT INTO `'.$this->schemaTable.'` VALUES(0)');
+        }
+
+        return 0;
+    }
+
+    /**
+     * Set current schema version
+     *
+     * @access public
+     * @param  integer  $version
+     */
+    public function setSchemaVersion($version)
+    {
+        $rq = $this->pdo->prepare('UPDATE `'.$this->schemaTable.'` SET `version`=?');
+        $rq->execute(array($version));
+    }
+
+    /**
+     * Upsert for a key/value variable
+     *
+     * @access public
+     * @param  string  $table
+     * @param  string  $keyColumn
+     * @param  string  $valueColumn
+     * @param  array   $dictionary
+     * @return bool    False on failure
+     */
+    public function upsert($table, $keyColumn, $valueColumn, array $dictionary)
+    {
+        try {
+
+            $sql = sprintf(
+                'REPLACE INTO %s (%s, %s) VALUES %s',
+                $this->escape($table),
+                $this->escape($keyColumn),
+                $this->escape($valueColumn),
+                implode(', ', array_fill(0, count($dictionary), '(?, ?)'))
+            );
+
+            $values = array();
+
+            foreach ($dictionary as $key => $value) {
+                $values[] = $key;
+                $values[] = $value;
+            }
+
+            $rq = $this->pdo->prepare($sql);
+            $rq->execute($values);
+
+            return true;
+        }
+        catch (PDOException $e) {
+            return false;
+        }
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/Driver/Postgres.php b/libs/picodb/lib/PicoDb/Driver/Postgres.php
new file mode 100644
index 00000000..86036839
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/Driver/Postgres.php
@@ -0,0 +1,212 @@
+<?php
+
+namespace PicoDb\Driver;
+
+use PDO;
+use PDOException;
+
+/**
+ * Postgres Driver
+ *
+ * @package PicoDb\Driver
+ * @author  Frederic Guillot
+ */
+class Postgres extends Base
+{
+    /**
+     * List of required settings options
+     *
+     * @access protected
+     * @var array
+     */
+    protected $requiredAttributes = array(
+        'database',
+    );
+
+    /**
+     * Table to store the schema version
+     *
+     * @access private
+     * @var array
+     */
+    private $schemaTable = 'schema_version';
+
+    /**
+     * Create a new PDO connection
+     *
+     * @access public
+     * @param  array   $settings
+     */
+    public function createConnection(array $settings)
+    {
+        $dsn = 'pgsql:dbname='.$settings['database'];
+        $username = null;
+        $password = null;
+        $options = array();
+
+        if (! empty($settings['username'])) {
+            $username = $settings['username'];
+        }
+
+        if (! empty($settings['password'])) {
+            $password = $settings['password'];
+        }
+
+        if (! empty($settings['hostname'])) {
+            $dsn .= ';host='.$settings['hostname'];
+        }
+
+        if (! empty($settings['port'])) {
+            $dsn .= ';port='.$settings['port'];
+        }
+
+        if (! empty($settings['timeout'])) {
+            $options[PDO::ATTR_TIMEOUT] = $settings['timeout'];
+        }
+
+        $this->pdo = new PDO($dsn, $username, $password, $options);
+
+        if (isset($settings['schema_table'])) {
+            $this->schemaTable = $settings['schema_table'];
+        }
+    }
+
+    /**
+     * Enable foreign keys
+     *
+     * @access public
+     */
+    public function enableForeignKeys()
+    {
+    }
+
+    /**
+     * Disable foreign keys
+     *
+     * @access public
+     */
+    public function disableForeignKeys()
+    {
+    }
+
+    /**
+     * Return true if the error code is a duplicate key
+     *
+     * @access public
+     * @param  integer  $code
+     * @return boolean
+     */
+    public function isDuplicateKeyError($code)
+    {
+        return $code == 23505 || $code == 23503;
+    }
+
+    /**
+     * Escape identifier
+     *
+     * @access public
+     * @param  string  $identifier
+     * @return string
+     */
+    public function escape($identifier)
+    {
+        return '"'.$identifier.'"';
+    }
+
+    /**
+     * Get non standard operator
+     *
+     * @access public
+     * @param  string  $operator
+     * @return string
+     */
+    public function getOperator($operator)
+    {
+        if ($operator === 'LIKE') {
+            return 'LIKE';
+        }
+        else if ($operator === 'ILIKE') {
+            return 'ILIKE';
+        }
+
+        return '';
+    }
+
+    /**
+     * Get last inserted id
+     *
+     * @access public
+     * @return integer
+     */
+    public function getLastId()
+    {
+        try {
+            $rq = $this->pdo->prepare('SELECT LASTVAL()');
+            $rq->execute();
+
+            return $rq->fetchColumn();
+        }
+        catch (PDOException $e) {
+            return 0;
+        }
+    }
+
+    /**
+     * Get current schema version
+     *
+     * @access public
+     * @return integer
+     */
+    public function getSchemaVersion()
+    {
+        $this->pdo->exec("CREATE TABLE IF NOT EXISTS ".$this->schemaTable." (version INTEGER DEFAULT 0)");
+
+        $rq = $this->pdo->prepare('SELECT "version" FROM "'.$this->schemaTable.'"');
+        $rq->execute();
+        $result = $rq->fetchColumn();
+
+        if ($result !== false) {
+            return (int) $result;
+        }
+        else {
+            $this->pdo->exec('INSERT INTO '.$this->schemaTable.' VALUES(0)');
+        }
+
+        return 0;
+    }
+
+    /**
+     * Set current schema version
+     *
+     * @access public
+     * @param  integer  $version
+     */
+    public function setSchemaVersion($version)
+    {
+        $rq = $this->pdo->prepare('UPDATE '.$this->schemaTable.' SET version=?');
+        $rq->execute(array($version));
+    }
+
+    /**
+     * Run EXPLAIN command
+     *
+     * @param  string $sql
+     * @param  array  $values
+     * @return array
+     */
+    public function explain($sql, array $values)
+    {
+        return $this->getConnection()->query('EXPLAIN (FORMAT YAML) '.$this->getSqlFromPreparedStatement($sql, $values))->fetchAll(PDO::FETCH_ASSOC);
+    }
+
+    /**
+     * Get database version
+     *
+     * @access public
+     * @return array
+     */
+    public function getDatabaseVersion()
+    {
+        return $this->getConnection()->query('SHOW server_version')->fetchColumn();
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/Driver/Sqlite.php b/libs/picodb/lib/PicoDb/Driver/Sqlite.php
new file mode 100644
index 00000000..0503d336
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/Driver/Sqlite.php
@@ -0,0 +1,199 @@
+<?php
+
+namespace PicoDb\Driver;
+
+use PDO;
+use PDOException;
+
+/**
+ * Sqlite Driver
+ *
+ * @package PicoDb\Driver
+ * @author  Frederic Guillot
+ */
+class Sqlite extends Base
+{
+    /**
+     * List of required settings options
+     *
+     * @access protected
+     * @var array
+     */
+    protected $requiredAttributes = array('filename');
+
+    /**
+     * Create a new PDO connection
+     *
+     * @access public
+     * @param  array   $settings
+     */
+    public function createConnection(array $settings)
+    {
+        $options = array();
+
+        if (! empty($settings['timeout'])) {
+            $options[PDO::ATTR_TIMEOUT] = $settings['timeout'];
+        }
+
+        $this->pdo = new PDO('sqlite:'.$settings['filename'], null, null, $options);
+        $this->enableForeignKeys();
+    }
+
+    /**
+     * Enable foreign keys
+     *
+     * @access public
+     */
+    public function enableForeignKeys()
+    {
+        $this->pdo->exec('PRAGMA foreign_keys = ON');
+    }
+
+    /**
+     * Disable foreign keys
+     *
+     * @access public
+     */
+    public function disableForeignKeys()
+    {
+        $this->pdo->exec('PRAGMA foreign_keys = OFF');
+    }
+
+    /**
+     * Return true if the error code is a duplicate key
+     *
+     * @access public
+     * @param  integer  $code
+     * @return boolean
+     */
+    public function isDuplicateKeyError($code)
+    {
+        return $code == 23000;
+    }
+
+    /**
+     * Escape identifier
+     *
+     * @access public
+     * @param  string  $identifier
+     * @return string
+     */
+    public function escape($identifier)
+    {
+        return '"'.$identifier.'"';
+    }
+
+    /**
+     * Get non standard operator
+     *
+     * @access public
+     * @param  string  $operator
+     * @return string
+     */
+    public function getOperator($operator)
+    {
+        if ($operator === 'LIKE' || $operator === 'ILIKE') {
+            return 'LIKE';
+        }
+
+        return '';
+    }
+
+    /**
+     * Get last inserted id
+     *
+     * @access public
+     * @return integer
+     */
+    public function getLastId()
+    {
+        return $this->pdo->lastInsertId();
+    }
+
+    /**
+     * Get current schema version
+     *
+     * @access public
+     * @return integer
+     */
+    public function getSchemaVersion()
+    {
+        $rq = $this->pdo->prepare('PRAGMA user_version');
+        $rq->execute();
+
+        return (int) $rq->fetchColumn();
+    }
+
+    /**
+     * Set current schema version
+     *
+     * @access public
+     * @param  integer  $version
+     */
+    public function setSchemaVersion($version)
+    {
+        $this->pdo->exec('PRAGMA user_version='.$version);
+    }
+
+    /**
+     * Upsert for a key/value variable
+     *
+     * @access public
+     * @param  string  $table
+     * @param  string  $keyColumn
+     * @param  string  $valueColumn
+     * @param  array   $dictionary
+     * @return bool    False on failure
+     */
+    public function upsert($table, $keyColumn, $valueColumn, array $dictionary)
+    {
+        try {
+            $this->pdo->beginTransaction();
+
+            foreach ($dictionary as $key => $value) {
+
+                $sql = sprintf(
+                    'INSERT OR REPLACE INTO %s (%s, %s) VALUES (?, ?)',
+                    $this->escape($table),
+                    $this->escape($keyColumn),
+                    $this->escape($valueColumn)
+                );
+
+                $rq = $this->pdo->prepare($sql);
+                $rq->execute(array($key, $value));
+            }
+
+            $this->pdo->commit();
+
+            return true;
+        }
+        catch (PDOException $e) {
+            $this->pdo->rollBack();
+            return false;
+        }
+    }
+
+    /**
+     * Run EXPLAIN command
+     *
+     * @access public
+     * @param  string $sql
+     * @param  array  $values
+     * @return array
+     */
+    public function explain($sql, array $values)
+    {
+        return $this->getConnection()->query('EXPLAIN QUERY PLAN '.$this->getSqlFromPreparedStatement($sql, $values))->fetchAll(PDO::FETCH_ASSOC);
+    }
+
+    /**
+     * Get database version
+     *
+     * @access public
+     * @return array
+     */
+    public function getDatabaseVersion()
+    {
+        return $this->getConnection()->query('SELECT sqlite_version()')->fetchColumn();
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/DriverFactory.php b/libs/picodb/lib/PicoDb/DriverFactory.php
new file mode 100644
index 00000000..13151ba7
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/DriverFactory.php
@@ -0,0 +1,45 @@
+<?php
+
+namespace PicoDb;
+
+use LogicException;
+use PicoDb\Driver\Mssql;
+use PicoDb\Driver\Mysql;
+use PicoDb\Driver\Postgres;
+use PicoDb\Driver\Sqlite;
+
+/**
+ * Class DriverFactory
+ *
+ * @package PicoDb
+ * @author  Frederic Guillot
+ */
+class DriverFactory
+{
+    /**
+     * Get database driver from settings or environment URL
+     *
+     * @access public
+     * @param  array $settings
+     * @return Mssql|Mysql|Postgres|Sqlite
+     */
+    public static function getDriver(array $settings)
+    {
+        if (! isset($settings['driver'])) {
+            throw new LogicException('You must define a database driver');
+        }
+
+        switch ($settings['driver']) {
+            case 'sqlite':
+                return new Sqlite($settings);
+            case 'mssql':
+                return new Mssql($settings);
+            case 'mysql':
+                return new Mysql($settings);
+            case 'postgres':
+                return new Postgres($settings);
+            default:
+                throw new LogicException('This database driver is not supported');
+        }
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/Hashtable.php b/libs/picodb/lib/PicoDb/Hashtable.php
new file mode 100644
index 00000000..17afd0e6
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/Hashtable.php
@@ -0,0 +1,112 @@
+<?php
+
+namespace PicoDb;
+
+use PDO;
+
+/**
+ * HashTable (key/value)
+ *
+ * @package PicoDb
+ * @author  Frederic Guillot
+ * @author  Mathias Kresin
+ */
+class Hashtable extends Table
+{
+    /**
+     * Column for the key
+     *
+     * @access private
+     * @var    string
+     */
+    private $keyColumn = 'key';
+
+    /**
+     * Column for the value
+     *
+     * @access private
+     * @var    string
+     */
+    private $valueColumn = 'value';
+
+    /**
+     * Set the key column
+     *
+     * @access public
+     * @param  string  $column
+     * @return $this
+     */
+    public function columnKey($column)
+    {
+        $this->keyColumn = $column;
+        return $this;
+    }
+
+    /**
+     * Set the value column
+     *
+     * @access public
+     * @param  string  $column
+     * @return $this
+     */
+    public function columnValue($column)
+    {
+        $this->valueColumn = $column;
+        return $this;
+    }
+
+    /**
+     * Insert or update
+     *
+     * @access public
+     * @param  array    $hashmap
+     * @return boolean
+     */
+    public function put(array $hashmap)
+    {
+        return $this->db->getDriver()->upsert($this->getName(), $this->keyColumn, $this->valueColumn, $hashmap);
+    }
+
+    /**
+     * Hashmap result [ [column1 => column2], [], ...]
+     *
+     * @access public
+     * @return array
+     */
+    public function get()
+    {
+        $hashmap = array();
+
+        // setup where condition
+        if (func_num_args() > 0) {
+            $this->in($this->keyColumn, func_get_args());
+        }
+
+        // setup to select columns in case that there are more than two
+        $this->columns($this->keyColumn, $this->valueColumn);
+
+        $rq = $this->db->execute($this->buildSelectQuery(), $this->conditionBuilder->getValues());
+        $rows = $rq->fetchAll(PDO::FETCH_NUM);
+
+        foreach ($rows as $row) {
+            $hashmap[$row[0]] = $row[1];
+        }
+
+        return $hashmap;
+    }
+
+    /**
+     * Shortcut method to get a hashmap result
+     *
+     * @access public
+     * @param  string  $key    Key column
+     * @param  string  $value  Value column
+     * @return array
+     */
+    public function getAll($key, $value)
+    {
+        $this->keyColumn = $key;
+        $this->valueColumn = $value;
+        return $this->get();
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/LargeObject.php b/libs/picodb/lib/PicoDb/LargeObject.php
new file mode 100644
index 00000000..ba5e3b92
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/LargeObject.php
@@ -0,0 +1,167 @@
+<?php
+
+namespace PicoDb;
+
+use PDO;
+use PicoDb\Builder\InsertBuilder;
+use PicoDb\Builder\UpdateBuilder;
+
+/**
+ * Handle Large Objects (LOBs)
+ *
+ * @package PicoDb
+ * @author  Frederic Guillot
+ */
+class LargeObject extends Table
+{
+    /**
+     * Fetch large object as file descriptor
+     *
+     * This method is not compatible with Sqlite and Mysql (return a string instead of resource)
+     *
+     * @access public
+     * @param  string $column
+     * @return resource
+     */
+    public function findOneColumnAsStream($column)
+    {
+        $this->limit(1);
+        $this->columns($column);
+
+        $rq = $this->db->getStatementHandler()
+            ->withSql($this->buildSelectQuery())
+            ->withPositionalParams($this->conditionBuilder->getValues())
+            ->execute();
+
+        $rq->bindColumn($column, $fd, PDO::PARAM_LOB);
+        $rq->fetch(PDO::FETCH_BOUND);
+
+        return $fd;
+    }
+
+    /**
+     * Fetch large object as string
+     *
+     * @access public
+     * @param  string $column
+     * @return string
+     */
+    public function findOneColumnAsString($column)
+    {
+        $fd = $this->findOneColumnAsStream($column);
+
+        if (is_string($fd)) {
+            return $fd;
+        }
+
+        return stream_get_contents($fd);
+    }
+
+    /**
+     * Insert large object from stream
+     *
+     * @access public
+     * @param  string           $blobColumn
+     * @param  resource|string  $blobDescriptor
+     * @param  array            $data
+     * @return bool
+     */
+    public function insertFromStream($blobColumn, &$blobDescriptor, array $data = array())
+    {
+        $columns = array_merge(array($blobColumn), array_keys($data));
+        $this->db->startTransaction();
+
+        $result =  $this->db->getStatementHandler()
+            ->withSql(InsertBuilder::getInstance($this->db, $this->conditionBuilder)
+                ->withTable($this->name)
+                ->withColumns($columns)
+                ->build()
+            )
+            ->withNamedParams($data)
+            ->withLobParam($blobColumn, $blobDescriptor)
+            ->execute();
+
+        $this->db->closeTransaction();
+
+        return $result !== false;
+    }
+
+    /**
+     * Insert large object from file
+     *
+     * @access public
+     * @param  string $blobColumn
+     * @param  string $filename
+     * @param  array $data
+     * @return bool
+     */
+    public function insertFromFile($blobColumn, $filename, array $data = array())
+    {
+        $fp = fopen($filename, 'rb');
+        $result = $this->insertFromStream($blobColumn, $fp, $data);
+        fclose($fp);
+        return $result;
+    }
+
+    /**
+     * Insert large object from string
+     *
+     * @access public
+     * @param  string $blobColumn
+     * @param  string $blobData
+     * @param  array $data
+     * @return bool
+     */
+    public function insertFromString($blobColumn, &$blobData, array $data = array())
+    {
+        return $this->insertFromStream($blobColumn, $blobData, $data);
+    }
+
+    /**
+     * Update large object from stream
+     *
+     * @access public
+     * @param  string   $blobColumn
+     * @param  resource $blobDescriptor
+     * @param  array    $data
+     * @return bool
+     */
+    public function updateFromStream($blobColumn, &$blobDescriptor, array $data = array())
+    {
+        $values = array_merge(array_values($data), $this->conditionBuilder->getValues());
+        $columns = array_merge(array($blobColumn), array_keys($data));
+
+        $this->db->startTransaction();
+
+        $result =  $this->db->getStatementHandler()
+            ->withSql(UpdateBuilder::getInstance($this->db, $this->conditionBuilder)
+                ->withTable($this->name)
+                ->withColumns($columns)
+                ->build()
+            )
+            ->withPositionalParams($values)
+            ->withLobParam($blobColumn, $blobDescriptor)
+            ->execute();
+
+        $this->db->closeTransaction();
+
+        return $result !== false;
+    }
+
+    /**
+     * Update large object from file
+     *
+     * @access public
+     * @param  string $blobColumn
+     * @param  string $filename
+     * @param  array $data
+     * @return bool
+     */
+    public function updateFromFile($blobColumn, $filename, array $data = array())
+    {
+        $fp = fopen($filename, 'r');
+        $result = $this->updateFromStream($blobColumn, $fp, $data);
+        fclose($fp);
+        return $result;
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/SQLException.php b/libs/picodb/lib/PicoDb/SQLException.php
new file mode 100644
index 00000000..7e570834
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/SQLException.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace PicoDb;
+
+use Exception;
+
+/**
+ * SQLException
+ *
+ * @package PicoDb
+ * @author  Frederic Guillot
+ */
+class SQLException extends Exception
+{
+}
diff --git a/libs/picodb/lib/PicoDb/Schema.php b/libs/picodb/lib/PicoDb/Schema.php
new file mode 100644
index 00000000..a0280368
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/Schema.php
@@ -0,0 +1,119 @@
+<?php
+
+namespace PicoDb;
+
+use PDOException;
+
+/**
+ * Schema migration class
+ *
+ * @package PicoDb
+ * @author  Frederic Guillot
+ */
+class Schema
+{
+    /**
+     * Database instance
+     *
+     * @access protected
+     * @var Database
+     */
+    protected $db = null;
+
+    /**
+     * Schema namespace
+     *
+     * @access protected
+     * @var string
+     */
+    protected $namespace = '\Schema';
+
+    /**
+     * Constructor
+     *
+     * @access public
+     * @param  Database  $db
+     */
+    public function __construct(Database $db)
+    {
+        $this->db = $db;
+    }
+
+    /**
+     * Set another namespace
+     *
+     * @access public
+     * @param  string $namespace
+     * @return Schema
+     */
+    public function setNamespace($namespace)
+    {
+        $this->namespace = $namespace;
+        return $this;
+    }
+
+    /**
+     * Get schema namespace
+     *
+     * @access public
+     * @return string
+     */
+    public function getNamespace()
+    {
+        return $this->namespace;
+    }
+
+    /**
+     * Check the schema version and run the migrations
+     *
+     * @access public
+     * @param  integer  $last_version
+     * @return boolean
+     */
+    public function check($last_version = 1)
+    {
+        $current_version = $this->db->getDriver()->getSchemaVersion();
+
+        if ($current_version < $last_version) {
+            return $this->migrateTo($current_version, $last_version);
+        }
+
+        return true;
+    }
+
+    /**
+     * Migrate the schema to one version to another
+     *
+     * @access public
+     * @param  integer  $current_version
+     * @param  integer  $next_version
+     * @return boolean
+     */
+    public function migrateTo($current_version, $next_version)
+    {
+        try {
+            for ($i = $current_version + 1; $i <= $next_version; $i++) {
+                $this->db->startTransaction();
+                $this->db->getDriver()->disableForeignKeys();
+
+                $function_name = $this->getNamespace().'\version_'.$i;
+
+                if (function_exists($function_name)) {
+                    $this->db->setLogMessage('Running migration '.$function_name);
+                    call_user_func($function_name, $this->db->getConnection());
+                }
+
+                $this->db->getDriver()->setSchemaVersion($i);
+                $this->db->getDriver()->enableForeignKeys();
+                $this->db->closeTransaction();
+            }
+        } catch (PDOException $e) {
+            $this->db->setLogMessage($e->getMessage());
+            $this->db->cancelTransaction();
+            $this->db->getDriver()->enableForeignKeys();
+            return false;
+        }
+
+        return true;
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/StatementHandler.php b/libs/picodb/lib/PicoDb/StatementHandler.php
new file mode 100644
index 00000000..d0cdaa49
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/StatementHandler.php
@@ -0,0 +1,353 @@
+<?php
+
+namespace PicoDb;
+
+use PDO;
+use PDOException;
+use PDOStatement;
+
+/**
+ * Statement Handler
+ *
+ * @package PicoDb
+ * @author  Frederic Guillot
+ */
+class StatementHandler
+{
+    /**
+     * Database instance
+     *
+     * @access protected
+     * @var Database
+     */
+    protected $db = null;
+
+    /**
+     * Flag to calculate query time
+     *
+     * @access protected
+     * @var boolean
+     */
+    protected $stopwatch = false;
+
+    /**
+     * Start time
+     *
+     * @access protected
+     * @var float
+     */
+    protected $startTime = 0;
+
+    /**
+     * Execution time of all queries
+     *
+     * @access protected
+     * @var float
+     */
+    protected $executionTime = 0;
+
+    /**
+     * Flag to log generated SQL queries
+     *
+     * @access protected
+     * @var boolean
+     */
+    protected $logQueries = false;
+
+    /**
+     * Run explain command on each query
+     *
+     * @access protected
+     * @var boolean
+     */
+    protected $explain = false;
+
+    /**
+     * Number of SQL queries executed
+     *
+     * @access protected
+     * @var integer
+     */
+    protected $nbQueries = 0;
+
+    /**
+     * SQL query
+     *
+     * @access protected
+     * @var string
+     */
+    protected $sql = '';
+
+    /**
+     * Positional SQL parameters
+     *
+     * @access protected
+     * @var array
+     */
+    protected $positionalParams = array();
+
+    /**
+     * Named SQL parameters
+     *
+     * @access protected
+     * @var array
+     */
+    protected $namedParams = array();
+
+    /**
+     * Flag to use named params
+     *
+     * @access protected
+     * @var boolean
+     */
+    protected $useNamedParams = false;
+
+    /**
+     * LOB params
+     *
+     * @access protected
+     * @var array
+     */
+    protected $lobParams = array();
+
+    /**
+     * Constructor
+     *
+     * @access public
+     * @param  Database $db
+     */
+    public function __construct(Database $db)
+    {
+        $this->db = $db;
+    }
+
+    /**
+     * Enable query logging
+     *
+     * @access public
+     * @return $this
+     */
+    public function withLogging()
+    {
+        $this->logQueries = true;
+        return $this;
+    }
+
+    /**
+     * Record query execution time
+     *
+     * @access public
+     * @return $this
+     */
+    public function withStopWatch()
+    {
+        $this->stopwatch = true;
+        return $this;
+    }
+
+    /**
+     * Execute explain command on query
+     *
+     * @access public
+     * @return $this
+     */
+    public function withExplain()
+    {
+        $this->explain = true;
+        return $this;
+    }
+
+    /**
+     * Set SQL query
+     *
+     * @access public
+     * @param  string  $sql
+     * @return $this
+     */
+    public function withSql($sql)
+    {
+        $this->sql = $sql;
+        return $this;
+    }
+
+    /**
+     * Set positional parameters
+     *
+     * @access public
+     * @param  array $params
+     * @return $this
+     */
+    public function withPositionalParams(array $params)
+    {
+        $this->positionalParams = $params;
+        return $this;
+    }
+
+    /**
+     * Set named parameters
+     *
+     * @access public
+     * @param  array $params
+     * @return $this
+     */
+    public function withNamedParams(array $params)
+    {
+        $this->namedParams = $params;
+        $this->useNamedParams = true;
+        return $this;
+    }
+
+    /**
+     * Bind large object parameter
+     *
+     * @access public
+     * @param $name
+     * @param $fp
+     * @return $this
+     */
+    public function withLobParam($name, &$fp)
+    {
+        $this->lobParams[$name] =& $fp;
+        return $this;
+    }
+
+    /**
+     * Get number of queries executed
+     *
+     * @access public
+     * @return int
+     */
+    public function getNbQueries()
+    {
+        return $this->nbQueries;
+    }
+
+    /**
+     * Execute a prepared statement
+     *
+     * Note: returns false on duplicate keys instead of SQLException
+     *
+     * @access public
+     * @return PDOStatement|false
+     */
+    public function execute()
+    {
+        try {
+            $this->beforeExecute();
+
+            $pdoStatement = $this->db->getConnection()->prepare($this->sql);
+            $this->bindParams($pdoStatement);
+            $pdoStatement->execute();
+
+            $this->afterExecute();
+            return $pdoStatement;
+        } catch (PDOException $e) {
+            return $this->handleSqlError($e);
+        }
+    }
+
+    /**
+     * Bind parameters to PDOStatement
+     *
+     * @access protected
+     * @param PDOStatement $pdoStatement
+     */
+    protected function bindParams(PDOStatement $pdoStatement)
+    {
+        $i = 1;
+
+        foreach ($this->lobParams as $name => $variable) {
+            if (! $this->useNamedParams) {
+                $parameter = $i;
+                $i++;
+            } else {
+                $parameter = $name;
+            }
+
+            $pdoStatement->bindParam($parameter, $variable, PDO::PARAM_LOB);
+        }
+
+        foreach ($this->positionalParams as $value) {
+            $pdoStatement->bindValue($i, $value, PDO::PARAM_STR);
+            $i++;
+        }
+
+        foreach ($this->namedParams as $name => $value) {
+            $pdoStatement->bindValue($name, $value, PDO::PARAM_STR);
+        }
+    }
+
+    /**
+     * Method executed before query execution
+     *
+     * @access protected
+     */
+    protected function beforeExecute()
+    {
+        if ($this->logQueries) {
+            $this->db->setLogMessage($this->sql);
+        }
+
+        if ($this->stopwatch) {
+            $this->startTime = microtime(true);
+        }
+    }
+
+    /**
+     * Method executed after query execution
+     *
+     * @access protected
+     */
+    protected function afterExecute()
+    {
+        if ($this->stopwatch) {
+            $duration = microtime(true) - $this->startTime;
+            $this->executionTime += $duration;
+            $this->db->setLogMessage('query_duration='.$duration);
+            $this->db->setLogMessage('total_execution_time='.$this->executionTime);
+        }
+
+        if ($this->explain) {
+            $this->db->setLogMessages($this->db->getDriver()->explain($this->sql, $this->positionalParams));
+        }
+
+        $this->nbQueries++;
+        $this->cleanup();
+    }
+
+    /**
+     * Reset internal properties after execution
+     * The same object instance is used
+     *
+     * @access protected
+     */
+    protected function cleanup()
+    {
+        $this->sql = '';
+        $this->useNamedParams = false;
+        $this->positionalParams = array();
+        $this->namedParams = array();
+        $this->lobParams = array();
+    }
+
+    /**
+     * Handle PDOException
+     *
+     * @access public
+     * @param  PDOException $e
+     * @return bool
+     * @throws SQLException
+     */
+    public function handleSqlError(PDOException $e)
+    {
+        $this->cleanup();
+        $this->db->cancelTransaction();
+        $this->db->setLogMessage($e->getMessage());
+
+        if ($this->db->getDriver()->isDuplicateKeyError($e->getCode())) {
+            return false;
+        }
+
+        throw new SQLException('SQL Error: '.$e->getMessage());
+    }
+}
diff --git a/libs/picodb/lib/PicoDb/Table.php b/libs/picodb/lib/PicoDb/Table.php
new file mode 100644
index 00000000..404b5cbe
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/Table.php
@@ -0,0 +1,729 @@
+<?php
+
+namespace PicoDb;
+
+use PDO;
+use Closure;
+use PicoDb\Builder\ConditionBuilder;
+use PicoDb\Builder\InsertBuilder;
+use PicoDb\Builder\UpdateBuilder;
+
+/**
+ * Table
+ *
+ * @package PicoDb
+ * @author  Frederic Guillot
+ *
+ * @method   $this   addCondition($sql)
+ * @method   $this   beginOr()
+ * @method   $this   closeOr()
+ * @method   $this   eq($column, $value)
+ * @method   $this   neq($column, $value)
+ * @method   $this   in($column, array $values)
+ * @method   $this   inSubquery($column, Table $subquery)
+ * @method   $this   notIn($column, array $values)
+ * @method   $this   notInSubquery($column, Table $subquery)
+ * @method   $this   like($column, $value)
+ * @method   $this   ilike($column, $value)
+ * @method   $this   gt($column, $value)
+ * @method   $this   gtSubquery($column, Table $subquery)
+ * @method   $this   lt($column, $value)
+ * @method   $this   ltSubquery($column, Table $subquery)
+ * @method   $this   gte($column, $value)
+ * @method   $this   gteSubquery($column, Table $subquery)
+ * @method   $this   lte($column, $value)
+ * @method   $this   lteSubquery($column, Table $subquery)
+ * @method   $this   isNull($column)
+ * @method   $this   notNull($column)
+ */
+class Table
+{
+    /**
+     * Sorting direction
+     *
+     * @access public
+     * @var string
+     */
+    const SORT_ASC = 'ASC';
+    const SORT_DESC = 'DESC';
+
+    /**
+     * Condition instance
+     *
+     * @access protected
+     * @var    ConditionBuilder
+     */
+    protected $conditionBuilder;
+
+    /**
+     * Database instance
+     *
+     * @access protected
+     * @var    Database
+     */
+    protected $db;
+
+    /**
+     * Table name
+     *
+     * @access protected
+     * @var    string
+     */
+    protected $name = '';
+
+    /**
+     * Columns list for SELECT query
+     *
+     * @access private
+     * @var    array
+     */
+    private $columns = array();
+
+    /**
+     * Columns to sum during update
+     *
+     * @access private
+     * @var    array
+     */
+    private $sumColumns = array();
+
+    /**
+     * SQL limit
+     *
+     * @access private
+     * @var    string
+     */
+    private $sqlLimit = '';
+
+    /**
+     * SQL offset
+     *
+     * @access private
+     * @var    string
+     */
+    private $sqlOffset = '';
+
+    /**
+     * SQL order
+     *
+     * @access private
+     * @var    string
+     */
+    private $sqlOrder = '';
+
+    /**
+     * SQL custom SELECT value
+     *
+     * @access private
+     * @var    string
+     */
+    private $sqlSelect = '';
+
+    /**
+     * SQL joins
+     *
+     * @access private
+     * @var    array
+     */
+    private $joins = array();
+
+    /**
+     * Use DISTINCT or not?
+     *
+     * @access private
+     * @var    boolean
+     */
+    private $distinct = false;
+
+    /**
+     * Group by those columns
+     *
+     * @access private
+     * @var    array
+     */
+    private $groupBy = array();
+
+    /**
+     * Callback for result filtering
+     *
+     * @access private
+     * @var    Closure
+     */
+    private $callback = null;
+
+    /**
+     * Constructor
+     *
+     * @access public
+     * @param  Database   $db
+     * @param  string     $name
+     */
+    public function __construct(Database $db, $name)
+    {
+        $this->db = $db;
+        $this->name = $name;
+        $this->conditionBuilder = new ConditionBuilder($db);
+    }
+
+    /**
+     * Return the table name
+     *
+     * @access public
+     * @return string
+     */
+    public function getName()
+    {
+        return $this->name;
+    }
+
+    /**
+     * Return ConditionBuilder object
+     *
+     * @access public
+     * @return ConditionBuilder
+     */
+    public function getConditionBuilder()
+    {
+        return $this->conditionBuilder;
+    }
+
+    /**
+     * Insert or update
+     *
+     * @access public
+     * @param  array    $data
+     * @return boolean
+     */
+    public function save(array $data)
+    {
+        return $this->conditionBuilder->hasCondition() ? $this->update($data) : $this->insert($data);
+    }
+
+    /**
+     * Update
+     *
+     * @access public
+     * @param  array   $data
+     * @return boolean
+     */
+    public function update(array $data = array())
+    {
+        $values = array_merge(array_values($data), array_values($this->sumColumns), $this->conditionBuilder->getValues());
+        $sql = UpdateBuilder::getInstance($this->db, $this->conditionBuilder)
+            ->withTable($this->name)
+            ->withColumns(array_keys($data))
+            ->withSumColumns(array_keys($this->sumColumns))
+            ->build();
+
+        return $this->db->execute($sql, $values) !== false;
+    }
+
+    /**
+     * Insert
+     *
+     * @access public
+     * @param  array    $data
+     * @return boolean
+     */
+    public function insert(array $data)
+    {
+        return $this->db->getStatementHandler()
+            ->withSql(InsertBuilder::getInstance($this->db, $this->conditionBuilder)
+                ->withTable($this->name)
+                ->withColumns(array_keys($data))
+                ->build()
+            )
+            ->withNamedParams($data)
+            ->execute() !== false;
+    }
+
+    /**
+     * Insert a new row and return the ID of the primary key
+     *
+     * @access public
+     * @param  array $data
+     * @return bool|int
+     */
+    public function persist(array $data)
+    {
+        if ($this->insert($data)) {
+            return $this->db->getLastId();
+        }
+
+        return false;
+    }
+
+    /**
+     * Remove
+     *
+     * @access public
+     * @return boolean
+     */
+    public function remove()
+    {
+        $sql = sprintf(
+            'DELETE FROM %s %s',
+            $this->db->escapeIdentifier($this->name),
+            $this->conditionBuilder->build()
+        );
+
+        $result = $this->db->execute($sql, $this->conditionBuilder->getValues());
+        return $result->rowCount() > 0;
+    }
+
+    /**
+     * Fetch all rows
+     *
+     * @access public
+     * @return array
+     */
+    public function findAll()
+    {
+        $rq = $this->db->execute($this->buildSelectQuery(), $this->conditionBuilder->getValues());
+        $results = $rq->fetchAll(PDO::FETCH_ASSOC);
+
+        if (is_callable($this->callback) && ! empty($results)) {
+            return call_user_func($this->callback, $results);
+        }
+
+        return $results;
+    }
+
+    /**
+     * Find all with a single column
+     *
+     * @access public
+     * @param  string    $column
+     * @return mixed
+     */
+    public function findAllByColumn($column)
+    {
+        $this->columns = array($column);
+        $rq = $this->db->execute($this->buildSelectQuery(), $this->conditionBuilder->getValues());
+
+        return $rq->fetchAll(PDO::FETCH_COLUMN, 0);
+    }
+
+    /**
+     * Fetch one row
+     *
+     * @access public
+     * @return array|null
+     */
+    public function findOne()
+    {
+        $this->limit(1);
+        $result = $this->findAll();
+
+        return isset($result[0]) ? $result[0] : null;
+    }
+
+    /**
+     * Fetch one column, first row
+     *
+     * @access public
+     * @param  string   $column
+     * @return string
+     */
+    public function findOneColumn($column)
+    {
+        $this->limit(1);
+        $this->columns = array($column);
+
+        return $this->db->execute($this->buildSelectQuery(), $this->conditionBuilder->getValues())->fetchColumn();
+    }
+
+    /**
+     * Build a subquery with an alias
+     *
+     * @access public
+     * @param  string  $sql
+     * @param  string  $alias
+     * @return $this
+     */
+    public function subquery($sql, $alias)
+    {
+        $this->columns[] = '('.$sql.') AS '.$this->db->escapeIdentifier($alias);
+        return $this;
+    }
+
+    /**
+     * Exists
+     *
+     * @access public
+     * @return integer
+     */
+    public function exists()
+    {
+        $sql = sprintf(
+            'SELECT 1 FROM %s '.implode(' ', $this->joins).$this->conditionBuilder->build(),
+            $this->db->escapeIdentifier($this->name)
+        );
+
+        $rq = $this->db->execute($sql, $this->conditionBuilder->getValues());
+        $result = $rq->fetchColumn();
+
+        return $result ? true : false;
+    }
+
+    /**
+     * Count
+     *
+     * @access public
+     * @return integer
+     */
+    public function count()
+    {
+        $sql = sprintf(
+            'SELECT COUNT(*) FROM %s '.implode(' ', $this->joins).$this->conditionBuilder->build().$this->sqlOrder.$this->sqlLimit.$this->sqlOffset,
+            $this->db->escapeIdentifier($this->name)
+        );
+
+        $rq = $this->db->execute($sql, $this->conditionBuilder->getValues());
+        $result = $rq->fetchColumn();
+
+        return $result ? (int) $result : 0;
+    }
+
+    /**
+     * Sum
+     *
+     * @access public
+     * @param  string   $column
+     * @return float
+     */
+    public function sum($column)
+    {
+        $sql = sprintf(
+            'SELECT SUM(%s) FROM %s '.implode(' ', $this->joins).$this->conditionBuilder->build().$this->sqlOrder.$this->sqlLimit.$this->sqlOffset,
+            $this->db->escapeIdentifier($column),
+            $this->db->escapeIdentifier($this->name)
+        );
+
+        $rq = $this->db->execute($sql, $this->conditionBuilder->getValues());
+        $result = $rq->fetchColumn();
+
+        return $result ? (float) $result : 0;
+    }
+
+    /**
+     * Increment column value
+     *
+     * @access public
+     * @param  string $column
+     * @param  string $value
+     * @return boolean
+     */
+    public function increment($column, $value)
+    {
+        $sql = sprintf(
+            'UPDATE %s SET %s=%s+%d '.$this->conditionBuilder->build(),
+            $this->db->escapeIdentifier($this->name),
+            $this->db->escapeIdentifier($column),
+            $this->db->escapeIdentifier($column),
+            $value
+        );
+
+        return $this->db->execute($sql, $this->conditionBuilder->getValues()) !== false;
+    }
+
+    /**
+     * Decrement column value
+     *
+     * @access public
+     * @param  string $column
+     * @param  string $value
+     * @return boolean
+     */
+    public function decrement($column, $value)
+    {
+        $sql = sprintf(
+            'UPDATE %s SET %s=%s-%d '.$this->conditionBuilder->build(),
+            $this->db->escapeIdentifier($this->name),
+            $this->db->escapeIdentifier($column),
+            $this->db->escapeIdentifier($column),
+            $value
+        );
+
+        return $this->db->execute($sql, $this->conditionBuilder->getValues()) !== false;
+    }
+
+    /**
+     * Left join
+     *
+     * @access public
+     * @param  string   $table              Join table
+     * @param  string   $foreign_column     Foreign key on the join table
+     * @param  string   $local_column       Local column
+     * @param  string   $local_table        Local table
+     * @param  string   $alias              Join table alias
+     * @return $this
+     */
+    public function join($table, $foreign_column, $local_column, $local_table = '', $alias = '')
+    {
+        $this->joins[] = sprintf(
+            'LEFT JOIN %s ON %s=%s',
+            $this->db->escapeIdentifier($table),
+            $this->db->escapeIdentifier($alias ?: $table).'.'.$this->db->escapeIdentifier($foreign_column),
+            $this->db->escapeIdentifier($local_table ?: $this->name).'.'.$this->db->escapeIdentifier($local_column)
+        );
+
+        return $this;
+    }
+
+    /**
+     * Left join
+     *
+     * @access public
+     * @param  string   $table1
+     * @param  string   $alias1
+     * @param  string   $column1
+     * @param  string   $table2
+     * @param  string   $column2
+     * @return $this
+     */
+    public function left($table1, $alias1, $column1, $table2, $column2)
+    {
+        $this->joins[] = sprintf(
+            'LEFT JOIN %s AS %s ON %s=%s',
+            $this->db->escapeIdentifier($table1),
+            $this->db->escapeIdentifier($alias1),
+            $this->db->escapeIdentifier($alias1).'.'.$this->db->escapeIdentifier($column1),
+            $this->db->escapeIdentifier($table2).'.'.$this->db->escapeIdentifier($column2)
+        );
+
+        return $this;
+    }
+
+    /**
+     * Inner join
+     *
+     * @access public
+     * @param  string   $table1
+     * @param  string   $alias1
+     * @param  string   $column1
+     * @param  string   $table2
+     * @param  string   $column2
+     * @return $this
+     */
+    public function inner($table1, $alias1, $column1, $table2, $column2)
+    {
+        $this->joins[] = sprintf(
+            'JOIN %s AS %s ON %s=%s',
+            $this->db->escapeIdentifier($table1),
+            $this->db->escapeIdentifier($alias1),
+            $this->db->escapeIdentifier($alias1).'.'.$this->db->escapeIdentifier($column1),
+            $this->db->escapeIdentifier($table2).'.'.$this->db->escapeIdentifier($column2)
+        );
+
+        return $this;
+    }
+
+    /**
+     * Order by
+     *
+     * @access public
+     * @param  string   $column    Column name
+     * @param  string   $order     Direction ASC or DESC
+     * @return $this
+     */
+    public function orderBy($column, $order = self::SORT_ASC)
+    {
+        $order = strtoupper($order);
+        $order = $order === self::SORT_ASC || $order === self::SORT_DESC ? $order : self::SORT_ASC;
+
+        if ($this->sqlOrder === '') {
+            $this->sqlOrder = ' ORDER BY '.$this->db->escapeIdentifier($column).' '.$order;
+        }
+        else {
+            $this->sqlOrder .= ', '.$this->db->escapeIdentifier($column).' '.$order;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Ascending sort
+     *
+     * @access public
+     * @param  string   $column
+     * @return $this
+     */
+    public function asc($column)
+    {
+        $this->orderBy($column, self::SORT_ASC);
+        return $this;
+    }
+
+    /**
+     * Descending sort
+     *
+     * @access public
+     * @param  string   $column
+     * @return $this
+     */
+    public function desc($column)
+    {
+        $this->orderBy($column, self::SORT_DESC);
+        return $this;
+    }
+
+    /**
+     * Limit
+     *
+     * @access public
+     * @param  integer   $value
+     * @return $this
+     */
+    public function limit($value)
+    {
+        if (! is_null($value)) {
+            $this->sqlLimit = ' LIMIT '.(int) $value;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Offset
+     *
+     * @access public
+     * @param  integer   $value
+     * @return $this
+     */
+    public function offset($value)
+    {
+        if (! is_null($value)) {
+            $this->sqlOffset = ' OFFSET '.(int) $value;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Group by
+     *
+     * @access public
+     * @return $this
+     */
+    public function groupBy()
+    {
+        $this->groupBy = func_get_args();
+        return $this;
+    }
+
+    /**
+     * Custom select
+     *
+     * @access public
+     * @param  string $select
+     * @return $this
+     */
+    public function select($select)
+    {
+        $this->sqlSelect = $select;
+        return $this;
+    }
+
+    /**
+     * Define the columns for the select
+     *
+     * @access public
+     * @return $this
+     */
+    public function columns()
+    {
+        $this->columns = func_get_args();
+        return $this;
+    }
+
+    /**
+     * Sum column
+     *
+     * @access public
+     * @param  string  $column
+     * @param  mixed   $value
+     * @return $this
+     */
+    public function sumColumn($column, $value)
+    {
+        $this->sumColumns[$column] = $value;
+        return $this;
+    }
+
+    /**
+     * Distinct
+     *
+     * @access public
+     * @return $this
+     */
+    public function distinct()
+    {
+        $this->columns = func_get_args();
+        $this->distinct = true;
+        return $this;
+    }
+
+    /**
+     * Add callback to alter the resultset
+     *
+     * @access public
+     * @param  Closure|array  $callback
+     * @return $this
+     */
+    public function callback($callback)
+    {
+        $this->callback = $callback;
+        return $this;
+    }
+
+    /**
+     * Build a select query
+     *
+     * @access public
+     * @return string
+     */
+    public function buildSelectQuery()
+    {
+        if (empty($this->sqlSelect)) {
+            $this->columns = $this->db->escapeIdentifierList($this->columns);
+            $this->sqlSelect = ($this->distinct ? 'DISTINCT ' : '').(empty($this->columns) ? '*' : implode(', ', $this->columns));
+        }
+
+        $this->groupBy = $this->db->escapeIdentifierList($this->groupBy);
+
+        return trim(sprintf(
+            'SELECT %s FROM %s %s %s %s %s %s %s',
+            $this->sqlSelect,
+            $this->db->escapeIdentifier($this->name),
+            implode(' ', $this->joins),
+            $this->conditionBuilder->build(),
+            empty($this->groupBy) ? '' : 'GROUP BY '.implode(', ', $this->groupBy),
+            $this->sqlOrder,
+            $this->sqlLimit,
+            $this->sqlOffset
+        ));
+    }
+
+    /**
+     * Magic method for sql conditions
+     *
+     * @access public
+     * @param  string   $name
+     * @param  array    $arguments
+     * @return $this
+     */
+    public function __call($name, array $arguments)
+    {
+        call_user_func_array(array($this->conditionBuilder, $name), $arguments);
+        return $this;
+    }
+
+    /**
+     * Clone function ensures that cloned objects are really clones
+     */
+     public function __clone()
+     {
+         $this->conditionBuilder = clone $this->conditionBuilder;
+     }
+}
diff --git a/libs/picodb/lib/PicoDb/UrlParser.php b/libs/picodb/lib/PicoDb/UrlParser.php
new file mode 100644
index 00000000..d8fcaf00
--- /dev/null
+++ b/libs/picodb/lib/PicoDb/UrlParser.php
@@ -0,0 +1,93 @@
+<?php
+
+namespace PicoDb;
+
+/**
+ * Class UrlParser
+ *
+ * @package PicoDb
+ * @author  Frederic Guillot
+ */
+class UrlParser
+{
+    /**
+     * URL
+     *
+     * @access private
+     * @var string
+     */
+    private $url;
+
+    /**
+     * Constructor
+     *
+     * @access public
+     * @param  string $environmentVariable
+     */
+    public function __construct($environmentVariable = 'DATABASE_URL')
+    {
+        $this->url = getenv($environmentVariable);
+    }
+
+    /**
+     * Get object instance
+     *
+     * @access public
+     * @param  string $environmentVariable
+     * @return static
+     */
+    public static function getInstance($environmentVariable = 'DATABASE_URL')
+    {
+        return new static($environmentVariable);
+    }
+
+    /**
+     * Return true if the variable is defined
+     *
+     * @access public
+     * @return bool
+     */
+    public function isEnvironmentVariableDefined()
+    {
+        return ! empty($this->url);
+    }
+
+    /**
+     * Get settings from URL
+     *
+     * @access public
+     * @param  string $url
+     * @return array
+     */
+    public function getSettings($url = '')
+    {
+        $url = $url ?: $this->url;
+        $components = parse_url($url);
+
+        if ($components === false) {
+            return array();
+        }
+
+        return array(
+            'driver' => $this->getUrlComponent($components, 'scheme'),
+            'username' => $this->getUrlComponent($components, 'user'),
+            'password' => $this->getUrlComponent($components, 'pass'),
+            'hostname' => $this->getUrlComponent($components, 'host'),
+            'port' => $this->getUrlComponent($components, 'port'),
+            'database' => ltrim($this->getUrlComponent($components, 'path'), '/'),
+        );
+    }
+
+    /**
+     * Get URL component
+     *
+     * @access private
+     * @param  array  $components
+     * @param  string $component
+     * @return mixed|null
+     */
+    private function getUrlComponent(array $components, $component)
+    {
+        return ! empty($components[$component]) ? $components[$component] : null;
+    }
+}
diff --git a/libs/picodb/phpunit.xml b/libs/picodb/phpunit.xml
new file mode 100644
index 00000000..77298d47
--- /dev/null
+++ b/libs/picodb/phpunit.xml
@@ -0,0 +1,30 @@
+<phpunit
+   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+   xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.5/phpunit.xsd"
+   colors="true"
+   stopOnError="true"
+   stopOnFailure="true">
+   <testsuites>
+      <testsuite name="sqlite">
+         <file>tests/UrlParserTest.php</file>
+         <file>tests/SqliteDriverTest.php</file>
+         <file>tests/SqliteDatabaseTest.php</file>
+         <file>tests/SqliteSchemaTest.php</file>
+         <file>tests/SqliteTableTest.php</file>
+      </testsuite>
+      <testsuite name="mysql">
+         <file>tests/UrlParserTest.php</file>
+         <file>tests/MysqlDriverTest.php</file>
+         <file>tests/MysqlDatabaseTest.php</file>
+         <file>tests/MysqlSchemaTest.php</file>
+         <file>tests/MysqlTableTest.php</file>
+      </testsuite>
+      <testsuite name="postgres">
+         <file>tests/UrlParserTest.php</file>
+         <file>tests/PostgresDriverTest.php</file>
+         <file>tests/PostgresDatabaseTest.php</file>
+         <file>tests/PostgresSchemaTest.php</file>
+         <file>tests/PostgresTableTest.php</file>
+      </testsuite>
+   </testsuites>
+</phpunit>
diff --git a/libs/picodb/tests/AlternativeSchemaFixture.php b/libs/picodb/tests/AlternativeSchemaFixture.php
new file mode 100644
index 00000000..bebcf137
--- /dev/null
+++ b/libs/picodb/tests/AlternativeSchemaFixture.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace AlternativeSchema;
+
+use PDO;
+
+function version_1(PDO $pdo)
+{
+    $pdo->exec('CREATE TABLE test1 (column1 TEXT)');
+}
+
+function version_2(PDO $pdo)
+{
+    $pdo->exec('CREATE TABLE test2 (column2 TEXT)');
+}
diff --git a/libs/picodb/tests/MysqlDatabaseTest.php b/libs/picodb/tests/MysqlDatabaseTest.php
new file mode 100644
index 00000000..bd819dd9
--- /dev/null
+++ b/libs/picodb/tests/MysqlDatabaseTest.php
@@ -0,0 +1,101 @@
+<?php
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+use PicoDb\Database;
+
+class MysqlDatabaseTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var PicoDb\Database
+     */
+    private $db;
+
+    public function setUp()
+    {
+        $this->db = new Database(array('driver' => 'mysql', 'hostname' => 'localhost', 'username' => 'root', 'password' => '', 'database' => 'picodb'));
+        $this->db->getConnection()->exec('CREATE DATABASE IF NOT EXISTS `picodb`');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS foobar');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS schema_version');
+    }
+
+    public function testEscapeIdentifer()
+    {
+        $this->assertEquals('`a`', $this->db->escapeIdentifier('a'));
+        $this->assertEquals('a.b', $this->db->escapeIdentifier('a.b'));
+        $this->assertEquals('`c`.`a`', $this->db->escapeIdentifier('a', 'c'));
+        $this->assertEquals('a.b', $this->db->escapeIdentifier('a.b', 'c'));
+        $this->assertEquals('SELECT COUNT(*) FROM test', $this->db->escapeIdentifier('SELECT COUNT(*) FROM test'));
+        $this->assertEquals('SELECT COUNT(*) FROM test', $this->db->escapeIdentifier('SELECT COUNT(*) FROM test', 'b'));
+    }
+
+    public function testEscapeIdentiferList()
+    {
+        $this->assertEquals(array('`c`.`a`', '`c`.`b`'), $this->db->escapeIdentifierList(array('a', 'b'), 'c'));
+        $this->assertEquals(array('`a`', 'd.b'), $this->db->escapeIdentifierList(array('a', 'd.b')));
+    }
+
+    public function testThatPreparedStatementWorks()
+    {
+        $this->db->getConnection()->exec('CREATE TABLE foobar (id INT AUTO_INCREMENT NOT NULL, something TEXT, PRIMARY KEY (id)) ENGINE=InnoDB');
+        $this->db->execute('INSERT INTO foobar (something) VALUES (?)', array('a'));
+        $this->assertEquals(1, $this->db->getLastId());
+        $this->assertEquals('a', $this->db->execute('SELECT something FROM foobar WHERE something=?', array('a'))->fetchColumn());
+    }
+
+    /**
+     * @expectedException PicoDb\SQLException
+     */
+    public function testBadSQLQuery()
+    {
+        $this->db->execute('INSERT INTO foobar');
+    }
+
+    public function testDuplicateKey()
+    {
+        $this->db->getConnection()->exec('CREATE TABLE foobar (something CHAR(1) UNIQUE) ENGINE=InnoDB');
+
+        $this->assertNotFalse($this->db->execute('INSERT INTO foobar (something) VALUES (?)', array('a')));
+        $this->assertFalse($this->db->execute('INSERT INTO foobar (something) VALUES (?)', array('a')));
+
+        $this->assertEquals(1, $this->db->execute('SELECT COUNT(*) FROM foobar WHERE something=?', array('a'))->fetchColumn());
+    }
+
+    public function testThatTransactionReturnsAValue()
+    {
+        $this->assertEquals('a', $this->db->transaction(function (Database $db) {
+            $db->getConnection()->exec('CREATE TABLE foobar (something CHAR(1) UNIQUE) ENGINE=InnoDB');
+            $db->execute('INSERT INTO foobar (something) VALUES (?)', array('a'));
+
+            return $db->execute('SELECT something FROM foobar WHERE something=?', array('a'))->fetchColumn();
+        }));
+    }
+
+    public function testThatTransactionReturnsTrue()
+    {
+        $this->assertTrue($this->db->transaction(function (Database $db) {
+            $db->getConnection()->exec('CREATE TABLE foobar (something CHAR(1) UNIQUE) ENGINE=InnoDB');
+            $db->execute('INSERT INTO foobar (something) VALUES (?)', array('a'));
+        }));
+    }
+
+    /**
+     * @expectedException PicoDb\SQLException
+     */
+    public function testThatTransactionThrowExceptionWhenRollbacked()
+    {
+        $this->assertFalse($this->db->transaction(function (Database $db) {
+            $db->getConnection()->exec('CREATE TABL');
+        }));
+    }
+
+    public function testThatTransactionReturnsFalseWhithDuplicateKey()
+    {
+        $this->assertFalse($this->db->transaction(function (Database $db) {
+            $db->getConnection()->exec('CREATE TABLE foobar (something CHAR(1) UNIQUE) ENGINE=InnoDB');
+            $r1 = $db->execute('INSERT INTO foobar (something) VALUES (?)', array('a'));
+            $r2 = $db->execute('INSERT INTO foobar (something) VALUES (?)', array('a'));
+            return $r1 && $r2;
+        }));
+    }
+}
diff --git a/libs/picodb/tests/MysqlDriverTest.php b/libs/picodb/tests/MysqlDriverTest.php
new file mode 100644
index 00000000..2666a993
--- /dev/null
+++ b/libs/picodb/tests/MysqlDriverTest.php
@@ -0,0 +1,73 @@
+<?php
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+use PicoDb\Driver\Mysql;
+
+class MysqlDriverTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var PicoDb\Driver\Mysql
+     */
+    private $driver;
+
+    public function setUp()
+    {
+        $this->driver = new Mysql(array('hostname' => 'localhost', 'username' => 'root', 'password' => '', 'database' => 'picodb'));
+        $this->driver->getConnection()->exec('CREATE DATABASE IF NOT EXISTS `picodb`');
+        $this->driver->getConnection()->exec('DROP TABLE IF EXISTS foobar');
+        $this->driver->getConnection()->exec('DROP TABLE IF EXISTS schema_version');
+    }
+
+    /**
+     * @expectedException LogicException
+     */
+    public function testMissingRequiredParameter()
+    {
+        new Mysql(array());
+    }
+
+    public function testDuplicateKeyError()
+    {
+        $this->assertFalse($this->driver->isDuplicateKeyError(1234));
+        $this->assertTrue($this->driver->isDuplicateKeyError(23000));
+    }
+
+    public function testOperator()
+    {
+        $this->assertEquals('LIKE BINARY', $this->driver->getOperator('LIKE'));
+        $this->assertEquals('LIKE', $this->driver->getOperator('ILIKE'));
+        $this->assertEquals('', $this->driver->getOperator('FOO'));
+    }
+
+    public function testSchemaVersion()
+    {
+        $this->assertEquals(0, $this->driver->getSchemaVersion());
+
+        $this->driver->setSchemaVersion(1);
+        $this->assertEquals(1, $this->driver->getSchemaVersion());
+
+        $this->driver->setSchemaVersion(42);
+        $this->assertEquals(42, $this->driver->getSchemaVersion());
+    }
+
+    public function testLastInsertId()
+    {
+        $this->assertEquals(0, $this->driver->getLastId());
+
+        $this->driver->getConnection()->exec('CREATE TABLE foobar (id INT AUTO_INCREMENT NOT NULL, something TEXT, PRIMARY KEY (id)) ENGINE=InnoDB');
+        $this->driver->getConnection()->exec('INSERT INTO foobar (something) VALUES (1)');
+
+        $this->assertEquals(1, $this->driver->getLastId());
+    }
+
+    public function testEscape()
+    {
+        $this->assertEquals('`foobar`', $this->driver->escape('foobar'));
+    }
+
+    public function testDatabaseVersion()
+    {
+        $this->assertStringStartsWith('5.', $this->driver->getDatabaseVersion());
+    }
+}
diff --git a/libs/picodb/tests/MysqlLobTest.php b/libs/picodb/tests/MysqlLobTest.php
new file mode 100644
index 00000000..1291d422
--- /dev/null
+++ b/libs/picodb/tests/MysqlLobTest.php
@@ -0,0 +1,83 @@
+<?php
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+class MysqlLobTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var PicoDb\Database
+     */
+    private $db;
+
+    public function setUp()
+    {
+        $this->db = new PicoDb\Database(array('driver' => 'mysql', 'hostname' => 'localhost', 'username' => 'root', 'password' => '', 'database' => 'picodb'));
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS large_objects');
+        $this->db->getConnection()->exec('CREATE TABLE large_objects (id VARCHAR(20), file_content BLOB)');
+        $this->db->getStatementHandler()->withLogging();
+    }
+
+    public function testInsert()
+    {
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__, array('id' => 'test'));
+        $this->assertTrue($result);
+    }
+
+    public function testInsertFromString()
+    {
+        $data = 'test';
+        $result = $this->db->largeObject('large_objects')->insertFromString('file_content', $data, array('id' => 'test'));
+        $this->assertTrue($result);
+    }
+
+    public function testInsertWithOptionalParams()
+    {
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__);
+        $this->assertTrue($result);
+    }
+
+    public function testFindOneColumnAsStream()
+    {
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__, array('id' => 'test'));
+        $this->assertTrue($result);
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test')->findOneColumnAsStream('file_content');
+        $this->assertSame(md5(file_get_contents(__FILE__)), md5($contents));
+    }
+
+    public function testFindOneColumnAsString()
+    {
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__, array('id' => 'test'));
+        $this->assertTrue($result);
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test')->findOneColumnAsString('file_content');
+        $this->assertSame(md5(file_get_contents(__FILE__)), md5($contents));
+    }
+
+    public function testUpdate()
+    {
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__, array('id' => 'test1'));
+        $this->assertTrue($result);
+
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__, array('id' => 'test2'));
+        $this->assertTrue($result);
+
+        $result = $this->db->largeObject('large_objects')->eq('id', 'test1')->updateFromFile('file_content', __DIR__.'/../LICENSE');
+        $this->assertTrue($result);
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test1')->findOneColumnAsString('file_content');
+        $this->assertSame(md5(file_get_contents(__DIR__.'/../LICENSE')), md5($contents));
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test2')->findOneColumnAsString('file_content');
+        $this->assertSame(md5(file_get_contents(__FILE__)), md5($contents));
+
+        $result = $this->db->largeObject('large_objects')->updateFromFile('file_content', __DIR__.'/../composer.json');
+        $this->assertTrue($result);
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test1')->findOneColumnAsString('file_content');
+        $this->assertSame(md5(file_get_contents(__DIR__.'/../composer.json')), md5($contents));
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test2')->findOneColumnAsString('file_content');
+        $this->assertSame(md5(file_get_contents(__DIR__.'/../composer.json')), md5($contents));
+    }
+}
diff --git a/libs/picodb/tests/MysqlSchemaTest.php b/libs/picodb/tests/MysqlSchemaTest.php
new file mode 100644
index 00000000..4eeee0b9
--- /dev/null
+++ b/libs/picodb/tests/MysqlSchemaTest.php
@@ -0,0 +1,49 @@
+<?php
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+require_once __DIR__.'/SchemaFixture.php';
+require_once __DIR__.'/AlternativeSchemaFixture.php';
+
+class MysqlSchemaTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var PicoDb\Database
+     */
+    private $db;
+
+    public function setUp()
+    {
+        $this->db = new PicoDb\Database(array('driver' => 'mysql', 'hostname' => 'localhost', 'username' => 'root', 'password' => '', 'database' => 'picodb'));
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS test1');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS test2');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS schema_version');
+    }
+
+    public function testMigrations()
+    {
+        $this->assertTrue($this->db->schema()->check(2));
+        $this->assertEquals(2, $this->db->getDriver()->getSchemaVersion());
+        $this->assertEquals('\Schema', $this->db->schema()->getNamespace());
+    }
+
+    public function testFailedMigrations()
+    {
+        $this->assertEquals(0, $this->db->getDriver()->getSchemaVersion());
+        $this->assertFalse($this->db->schema()->check(3));
+        $this->assertEquals(2, $this->db->getDriver()->getSchemaVersion());
+
+        $logs = $this->db->getLogMessages();
+        $this->assertNotEmpty($logs);
+        $this->assertEquals('Running migration \Schema\version_1', $logs[0]);
+        $this->assertEquals('Running migration \Schema\version_2', $logs[1]);
+        $this->assertEquals('Running migration \Schema\version_3', $logs[2]);
+        $this->assertStringStartsWith('SQLSTATE[42000]: Syntax error or access violation', $logs[3]);
+    }
+
+    public function testAlternativeSchemaNamespace()
+    {
+        $this->assertEquals('\AlternativeSchema', $this->db->schema('\AlternativeSchema')->getNamespace());
+        $this->assertTrue($this->db->schema('\AlternativeSchema')->check(2));
+        $this->assertEquals(2, $this->db->getDriver()->getSchemaVersion());
+    }
+}
diff --git a/libs/picodb/tests/MysqlTableTest.php b/libs/picodb/tests/MysqlTableTest.php
new file mode 100644
index 00000000..62c1730a
--- /dev/null
+++ b/libs/picodb/tests/MysqlTableTest.php
@@ -0,0 +1,356 @@
+<?php
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+use PicoDb\Database;
+use PicoDb\Table;
+
+class MysqlTableTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var PicoDb\Database
+     */
+    private $db;
+
+    public function setUp()
+    {
+        $this->db = new Database(array('driver' => 'mysql', 'hostname' => 'localhost', 'username' => 'root', 'password' => '', 'database' => 'picodb'));
+        $this->db->getConnection()->exec('CREATE DATABASE IF NOT EXISTS `picodb`');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS test1');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS test2');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS foobar');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS foobar_persist');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS schema_version');
+    }
+
+    public function testSelect()
+    {
+        $this->assertEquals('SELECT 1 FROM `test`', $this->db->table('test')->select(1)->buildSelectQuery());
+    }
+
+    public function testColumns()
+    {
+        $this->assertEquals('SELECT `a`, `b` FROM `test`', $this->db->table('test')->columns('a', 'b')->buildSelectQuery());
+    }
+
+    public function testDistinct()
+    {
+        $this->assertEquals('SELECT DISTINCT `a`, `b` FROM `test`', $this->db->table('test')->distinct('a', 'b')->buildSelectQuery());
+    }
+
+    public function testGroupBy()
+    {
+        $this->assertEquals('SELECT * FROM `test`   GROUP BY `a`', $this->db->table('test')->groupBy('a')->buildSelectQuery());
+    }
+
+    public function testOrderBy()
+    {
+        $this->assertEquals('SELECT * FROM `test`     ORDER BY `a` ASC', $this->db->table('test')->asc('a')->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM `test`     ORDER BY `a` ASC', $this->db->table('test')->orderBy('a', Table::SORT_ASC)->buildSelectQuery());
+
+        $this->assertEquals('SELECT * FROM `test`     ORDER BY `a` DESC', $this->db->table('test')->desc('a')->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM `test`     ORDER BY `a` DESC', $this->db->table('test')->orderBy('a', Table::SORT_DESC)->buildSelectQuery());
+
+        $this->assertEquals('SELECT * FROM `test`     ORDER BY `a` ASC, `b` ASC', $this->db->table('test')->asc('a')->asc('b')->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM `test`     ORDER BY `a` DESC, `b` DESC', $this->db->table('test')->desc('a')->desc('b')->buildSelectQuery());
+
+        $this->assertEquals('SELECT * FROM `test`     ORDER BY `a` ASC, `b` ASC', $this->db->table('test')->orderBy('a')->orderBy('b')->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM `test`     ORDER BY `a` DESC, `b` DESC', $this->db->table('test')->orderBy('a', Table::SORT_DESC)->orderBy('b', Table::SORT_DESC)->buildSelectQuery());
+
+        $this->assertEquals('SELECT * FROM `test`     ORDER BY `a` DESC, `b` ASC', $this->db->table('test')->desc('a')->asc('b')->buildSelectQuery());
+    }
+
+    public function testLimit()
+    {
+        $this->assertEquals('SELECT * FROM `test`      LIMIT 10', $this->db->table('test')->limit(10)->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM `test`', $this->db->table('test')->limit(null)->buildSelectQuery());
+    }
+
+    public function testOffset()
+    {
+        $this->assertEquals('SELECT * FROM `test`       OFFSET 0', $this->db->table('test')->offset(0)->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM `test`       OFFSET 10', $this->db->table('test')->offset(10)->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM `test`', $this->db->table('test')->limit(null)->buildSelectQuery());
+    }
+
+    public function testLimitOffset()
+    {
+        $this->assertEquals('SELECT * FROM `test`      LIMIT 2  OFFSET 0', $this->db->table('test')->offset(0)->limit(2)->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM `test`      LIMIT 5  OFFSET 10', $this->db->table('test')->offset(10)->limit(5)->buildSelectQuery());
+    }
+
+    public function testSubquery()
+    {
+        $this->assertEquals('SELECT (SELECT 1 FROM "foobar" WHERE 1=1) AS `b` FROM `test`', $this->db->table('test')->subquery('SELECT 1 FROM "foobar" WHERE 1=1', 'b')->buildSelectQuery());
+    }
+
+    public function testConditionEqual()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM `test`   WHERE `a` = ? AND `b` = ?', $table->eq('a', 2)->eq('b', 'foobar')->buildSelectQuery());
+        $this->assertEquals(array(2, 'foobar'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionNotEqual()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM `test`   WHERE `a` != ?', $table->neq('a', 2)->buildSelectQuery());
+        $this->assertEquals(array(2), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionIn()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM `test`   WHERE `a` IN (?, ?)', $table->in('a', array('b', 'c'))->buildSelectQuery());
+        $this->assertEquals(array('b', 'c'), $table->getConditionBuilder()->getValues());
+
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM `test`', $table->in('a', array())->buildSelectQuery());
+        $this->assertEquals(array(), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionInSubquery()
+    {
+        $table = $this->db->table('test');
+        $subquery = $this->db->table('test2')->columns('c')->eq('d', 'e');
+
+        $this->assertEquals(
+            'SELECT * FROM `test`   WHERE `a` IN (SELECT `c` FROM `test2`   WHERE `d` = ?)',
+            $table->inSubquery('a', $subquery)->buildSelectQuery()
+        );
+
+        $this->assertEquals(array('e'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionNotIn()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM `test`   WHERE `a` NOT IN (?, ?)', $table->notIn('a', array('b', 'c'))->buildSelectQuery());
+        $this->assertEquals(array('b', 'c'), $table->getConditionBuilder()->getValues());
+
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM `test`', $table->notIn('a', array())->buildSelectQuery());
+        $this->assertEquals(array(), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionNotInSubquery()
+    {
+        $table = $this->db->table('test');
+        $subquery = $this->db->table('test2')->columns('c')->eq('d', 'e');
+
+        $this->assertEquals(
+            'SELECT * FROM `test`   WHERE `a` NOT IN (SELECT `c` FROM `test2`   WHERE `d` = ?)',
+            $table->notInSubquery('a', $subquery)->buildSelectQuery()
+        );
+
+        $this->assertEquals(array('e'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionLike()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM `test`   WHERE `a` LIKE BINARY ?', $table->like('a', '%foobar%')->buildSelectQuery());
+        $this->assertEquals(array('%foobar%'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionILike()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM `test`   WHERE `a` LIKE ?', $table->ilike('a', '%foobar%')->buildSelectQuery());
+        $this->assertEquals(array('%foobar%'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionGreaterThan()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM `test`   WHERE `a` > ?', $table->gt('a', 5)->buildSelectQuery());
+        $this->assertEquals(array(5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionGreaterThanOrEqual()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM `test`   WHERE `a` >= ?', $table->gte('a', 5)->buildSelectQuery());
+        $this->assertEquals(array(5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionLowerThan()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM `test`   WHERE `a` < ?', $table->lt('a', 5)->buildSelectQuery());
+        $this->assertEquals(array(5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionLowerThanOrEqual()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM `test`   WHERE `a` <= ?', $table->lte('a', 5)->buildSelectQuery());
+        $this->assertEquals(array(5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionIsNull()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM `test`   WHERE `a` IS NOT NULL', $table->notNull('a')->buildSelectQuery());
+        $this->assertEquals(array(), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testCustomCondition()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM `test`   WHERE a=c AND `b` = ?', $table->addCondition('a=c')->eq('b', 4)->buildSelectQuery());
+        $this->assertEquals(array(4), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testOrConditions()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM `test`   WHERE `a` IS NOT NULL AND (`b` = ? OR `c` >= ?)', $table->notNull('a')->beginOr()->eq('b', 2)->gte('c', 5)->closeOr()->buildSelectQuery());
+        $this->assertEquals(array(2, 5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testPersist()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar_persist (id INT NOT NULL AUTO_INCREMENT, a VARCHAR(10), PRIMARY KEY(id))'));
+        $this->assertSame(1, $this->db->table('foobar_persist')->persist(array('a' => 'b')));
+    }
+
+    public function testInsertUpdate()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar (a TEXT)'));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 'b')));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 'c')));
+
+        $this->assertEquals(array(array('a' => 'b'), array('a' => 'c')), $this->db->table('foobar')->findAll());
+
+        $this->assertEquals(array('b', 'c'), $this->db->table('foobar')->findAllByColumn('a'));
+
+        $this->assertEquals(array('a' => 'b'), $this->db->table('foobar')->findOne());
+
+        $this->assertEquals('b', $this->db->table('foobar')->findOneColumn('a'));
+
+        $this->assertTrue($this->db->table('foobar')->exists());
+        $this->assertTrue($this->db->table('foobar')->eq('a', 'c')->exists());
+        $this->assertFalse($this->db->table('foobar')->eq('a', 'e')->exists());
+
+        $this->assertEquals(2, $this->db->table('foobar')->count());
+        $this->assertEquals(1, $this->db->table('foobar')->eq('a', 'c')->count());
+        $this->assertEquals(0, $this->db->table('foobar')->eq('a', 'e')->count());
+
+        $this->assertTrue($this->db->table('foobar')->eq('a', 'c')->remove());
+        $this->assertFalse($this->db->table('foobar')->eq('a', 'e')->remove());
+
+        $this->assertTrue($this->db->table('foobar')->eq('a', 'b')->update(array('a' => 'test')));
+        $this->assertTrue($this->db->table('foobar')->eq('a', 'lol')->update(array('a' => 'test')));
+
+        $this->assertNotEmpty($this->db->table('foobar')->eq('a', 'test')->findOne());
+        $this->assertNull($this->db->table('foobar')->eq('a', 'lol')->findOne());
+
+        $this->assertTrue($this->db->table('foobar')->eq('a', 'test')->save(array('a' => 'plop')));
+        $this->assertEquals(1, $this->db->table('foobar')->count());
+    }
+
+    public function testSumColumn()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar (b FLOAT, c FLOAT)'));
+        $this->assertTrue($this->db->table('foobar')->insert(array('b' => 2, 'c' => 3.3)));
+
+        $this->assertTrue($this->db->table('foobar')->sumColumn('b', 2.5)->sumColumn('c', 3)->update());
+
+        $this->assertEquals(
+            array('b' => 4.5, 'c' => 6.3),
+            $this->db->table('foobar')->findOne()
+        );
+    }
+
+    public function testSum()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar (a INTEGER)'));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 2)));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 5)));
+        $this->assertEquals(7, $this->db->table('foobar')->sum('a'));
+    }
+
+    public function testIncrement()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar (a INTEGER DEFAULT 0, b INTEGER DEFAULT 0)'));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 2, 'b' => 5)));
+        $this->assertTrue($this->db->table('foobar')->eq('b', 5)->increment('a', 3));
+        $this->assertEquals(5, $this->db->table('foobar')->findOneColumn('a'));
+    }
+
+    public function testLeftJoin()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE test1 (a INTEGER NOT NULL, foreign_key INTEGER NOT NULL)'));
+        $this->assertNotFalse($this->db->execute('CREATE TABLE test2 (id INTEGER NOT NULL, b INTEGER NOT NULL)'));
+
+        $this->assertTrue($this->db->table('test2')->insert(array('id' => 42, 'b' => 2)));
+        $this->assertTrue($this->db->table('test1')->insert(array('a' => 18, 'foreign_key' => 42)));
+
+        $this->assertEquals(
+            array('a' => 18, 'b' => 2),
+            $this->db->table('test2')->columns('a', 'b')->eq('a', 18)->left('test1', 't1', 'foreign_key', 'test2', 'id')->findOne()
+        );
+
+        $this->assertEquals(
+            array('a' => 18, 'b' => 2),
+            $this->db->table('test2')->columns('a', 'b')->eq('a', 18)->join('test1', 'foreign_key', 'id')->findOne()
+        );
+
+        $this->assertEquals(
+            array('a' => 18, 'b' => 2),
+            $this->db->table('test1')->columns('a', 'b')->join('test2', 'id', 'foreign_key')->findOne()
+        );
+    }
+
+    public function testHashTable()
+    {
+        $this->assertNotFalse($this->db->execute(
+            'CREATE TABLE foobar (
+                column1 VARCHAR(20) NOT NULL UNIQUE,
+                column2 VARCHAR(20) default NULL
+            )'
+        ));
+
+        $this->assertTrue($this->db->table('foobar')->insert(array('column1' => 'option1', 'column2' => 'value1')));
+        $this->assertTrue($this->db->table('foobar')->insert(array('column1' => 'option2', 'column2' => 'value2')));
+        $this->assertTrue($this->db->table('foobar')->insert(array('column1' => 'option3', 'column2' => 'value3')));
+
+        $values = array(
+            'option1' => 'hey',
+            'option4' => 'ho',
+        );
+
+        $this->assertTrue($this->db->hashtable('foobar')->columnKey('column1')->columnValue('column2')->put($values));
+
+        $this->assertEquals(
+            array('option2' => 'value2', 'option4' => 'ho'),
+            $this->db->hashtable('foobar')->columnKey('column1')->columnValue('column2')->get('option2', 'option4')
+        );
+
+        $this->assertEquals(
+            array('option2' => 'value2', 'option3' => 'value3', 'option1' => 'hey', 'option4' => 'ho'),
+            $this->db->hashtable('foobar')->columnKey('column1')->columnValue('column2')->get()
+        );
+
+        $this->assertEquals(
+            array('option2' => 'value2', 'option3' => 'value3', 'option1' => 'hey', 'option4' => 'ho'),
+            $this->db->hashtable('foobar')->getAll('column1', 'column2')
+        );
+    }
+}
diff --git a/libs/picodb/tests/PostgresDatabaseTest.php b/libs/picodb/tests/PostgresDatabaseTest.php
new file mode 100644
index 00000000..d0d8a644
--- /dev/null
+++ b/libs/picodb/tests/PostgresDatabaseTest.php
@@ -0,0 +1,100 @@
+<?php
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+use PicoDb\Database;
+
+class PostgresDatabaseTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var PicoDb\Database
+     */
+    private $db;
+
+    public function setUp()
+    {
+        $this->db = new Database(array('driver' => 'postgres', 'hostname' => 'localhost', 'username' => 'postgres', 'password' => '', 'database' => 'picodb'));
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS foobar');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS schema_version');
+    }
+
+    public function testEscapeIdentifer()
+    {
+        $this->assertEquals('"a"', $this->db->escapeIdentifier('a'));
+        $this->assertEquals('a.b', $this->db->escapeIdentifier('a.b'));
+        $this->assertEquals('"c"."a"', $this->db->escapeIdentifier('a', 'c'));
+        $this->assertEquals('a.b', $this->db->escapeIdentifier('a.b', 'c'));
+        $this->assertEquals('SELECT COUNT(*) FROM test', $this->db->escapeIdentifier('SELECT COUNT(*) FROM test'));
+        $this->assertEquals('SELECT COUNT(*) FROM test', $this->db->escapeIdentifier('SELECT COUNT(*) FROM test', 'b'));
+    }
+
+    public function testEscapeIdentiferList()
+    {
+        $this->assertEquals(array('"c"."a"', '"c"."b"'), $this->db->escapeIdentifierList(array('a', 'b'), 'c'));
+        $this->assertEquals(array('"a"', 'd.b'), $this->db->escapeIdentifierList(array('a', 'd.b')));
+    }
+
+    public function testThatPreparedStatementWorks()
+    {
+        $this->db->getConnection()->exec('CREATE TABLE foobar (id serial PRIMARY KEY, something TEXT)');
+        $this->db->execute('INSERT INTO foobar (something) VALUES (?)', array('a'));
+        $this->assertEquals(1, $this->db->getLastId());
+        $this->assertEquals('a', $this->db->execute('SELECT something FROM foobar WHERE something=?', array('a'))->fetchColumn());
+    }
+
+    /**
+     * @expectedException PicoDb\SQLException
+     */
+    public function testBadSQLQuery()
+    {
+        $this->db->execute('INSERT INTO foobar');
+    }
+
+    public function testDuplicateKey()
+    {
+        $this->db->getConnection()->exec('CREATE TABLE foobar (something TEXT UNIQUE)');
+
+        $this->assertNotFalse($this->db->execute('INSERT INTO foobar (something) VALUES (?)', array('a')));
+        $this->assertFalse($this->db->execute('INSERT INTO foobar (something) VALUES (?)', array('a')));
+
+        $this->assertEquals(1, $this->db->execute('SELECT COUNT(*) FROM foobar WHERE something=?', array('a'))->fetchColumn());
+    }
+
+    public function testThatTransactionReturnsAValue()
+    {
+        $this->assertEquals('a', $this->db->transaction(function (Database $db) {
+            $db->getConnection()->exec('CREATE TABLE foobar (something TEXT UNIQUE)');
+            $db->execute('INSERT INTO foobar (something) VALUES (?)', array('a'));
+
+            return $db->execute('SELECT something FROM foobar WHERE something=?', array('a'))->fetchColumn();
+        }));
+    }
+
+    public function testThatTransactionReturnsTrue()
+    {
+        $this->assertTrue($this->db->transaction(function (Database $db) {
+            $db->getConnection()->exec('CREATE TABLE foobar (something TEXT UNIQUE)');
+            $db->execute('INSERT INTO foobar (something) VALUES (?)', array('a'));
+        }));
+    }
+
+    /**
+     * @expectedException PicoDb\SQLException
+     */
+    public function testThatTransactionThrowExceptionWhenRollbacked()
+    {
+        $this->assertFalse($this->db->transaction(function (Database $db) {
+            $db->getConnection()->exec('CREATE TABL');
+        }));
+    }
+
+    public function testThatTransactionReturnsFalseWhithDuplicateKey()
+    {
+        $this->assertFalse($this->db->transaction(function (Database $db) {
+            $db->getConnection()->exec('CREATE TABLE foobar (something TEXT UNIQUE)');
+            $r1 = $db->execute('INSERT INTO foobar (something) VALUES (?)', array('a'));
+            $r2 = $db->execute('INSERT INTO foobar (something) VALUES (?)', array('a'));
+            return $r1 && $r2;
+        }));
+    }
+}
diff --git a/libs/picodb/tests/PostgresDriverTest.php b/libs/picodb/tests/PostgresDriverTest.php
new file mode 100644
index 00000000..9798042b
--- /dev/null
+++ b/libs/picodb/tests/PostgresDriverTest.php
@@ -0,0 +1,78 @@
+<?php
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+use PicoDb\Driver\Postgres;
+
+class PostgresDriverTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var PicoDb\Driver\Postgres
+     */
+    private $driver;
+
+    public function setUp()
+    {
+        $this->driver = new Postgres(array('hostname' => 'localhost', 'username' => 'postgres', 'password' => 'postgres', 'database' => 'picodb'));
+        $this->driver->getConnection()->exec('DROP TABLE IF EXISTS foobar');
+        $this->driver->getConnection()->exec('DROP TABLE IF EXISTS schema_version');
+    }
+
+    public function tearDown()
+    {
+        $this->driver->closeConnection();
+    }
+
+    /**
+     * @expectedException LogicException
+     */
+    public function testMissingRequiredParameter()
+    {
+        new Postgres(array());
+    }
+
+    public function testDuplicateKeyError()
+    {
+        $this->assertFalse($this->driver->isDuplicateKeyError(1234));
+        $this->assertTrue($this->driver->isDuplicateKeyError(23505));
+        $this->assertTrue($this->driver->isDuplicateKeyError(23503));
+    }
+
+    public function testOperator()
+    {
+        $this->assertEquals('LIKE', $this->driver->getOperator('LIKE'));
+        $this->assertEquals('ILIKE', $this->driver->getOperator('ILIKE'));
+        $this->assertEquals('', $this->driver->getOperator('FOO'));
+    }
+
+    public function testSchemaVersion()
+    {
+        $this->assertEquals(0, $this->driver->getSchemaVersion());
+
+        $this->driver->setSchemaVersion(1);
+        $this->assertEquals(1, $this->driver->getSchemaVersion());
+
+        $this->driver->setSchemaVersion(42);
+        $this->assertEquals(42, $this->driver->getSchemaVersion());
+    }
+
+    public function testLastInsertId()
+    {
+        $this->assertEquals(0, $this->driver->getLastId());
+
+        $this->driver->getConnection()->exec('CREATE TABLE foobar (id serial PRIMARY KEY, something TEXT)');
+        $this->driver->getConnection()->exec('INSERT INTO foobar (something) VALUES (1)');
+
+        $this->assertEquals(1, $this->driver->getLastId());
+    }
+
+    public function testEscape()
+    {
+        $this->assertEquals('"foobar"', $this->driver->escape('foobar'));
+    }
+
+    public function testDatabaseVersion()
+    {
+        $this->assertStringStartsWith('9.', $this->driver->getDatabaseVersion());
+    }
+}
diff --git a/libs/picodb/tests/PostgresLobTest.php b/libs/picodb/tests/PostgresLobTest.php
new file mode 100644
index 00000000..39cf8fb0
--- /dev/null
+++ b/libs/picodb/tests/PostgresLobTest.php
@@ -0,0 +1,87 @@
+<?php
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+use PicoDb\Database;
+
+class PostgresLobTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var PicoDb\Database
+     */
+    private $db;
+
+    public function setUp()
+    {
+        $this->db = new Database(array('driver' => 'postgres', 'hostname' => 'localhost', 'username' => 'postgres', 'password' => 'postgres', 'database' => 'picodb'));
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS large_objects');
+        $this->db->getConnection()->exec('CREATE TABLE large_objects (id VARCHAR(20), file_content bytea)');
+    }
+
+    public function testInsert()
+    {
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__, array('id' => 'test'));
+        $this->assertTrue($result);
+    }
+
+    public function testInsertFromString()
+    {
+        $data = 'test';
+        $result = $this->db->largeObject('large_objects')->insertFromString('file_content', $data, array('id' => 'test'));
+        $this->assertTrue($result);
+    }
+
+    public function testInsertWithOptionalParams()
+    {
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__);
+        $this->assertTrue($result);
+    }
+
+    public function testFindOneColumnAsStream()
+    {
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__, array('id' => 'test'));
+        $this->assertTrue($result);
+
+        $fd = $this->db->largeObject('large_objects')->eq('id', 'test')->findOneColumnAsStream('file_content');
+        $contents = fread($fd, filesize(__FILE__));
+        fclose($fd);
+
+        $this->assertSame(md5(file_get_contents(__FILE__)), md5($contents));
+    }
+
+    public function testFindOneColumnAsString()
+    {
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__, array('id' => 'test'));
+        $this->assertTrue($result);
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test')->findOneColumnAsString('file_content');
+        $this->assertSame(md5(file_get_contents(__FILE__)), md5($contents));
+    }
+
+    public function testUpdate()
+    {
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__, array('id' => 'test1'));
+        $this->assertTrue($result);
+
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__, array('id' => 'test2'));
+        $this->assertTrue($result);
+
+        $result = $this->db->largeObject('large_objects')->eq('id', 'test1')->updateFromFile('file_content', __DIR__.'/../LICENSE');
+        $this->assertTrue($result);
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test1')->findOneColumnAsString('file_content');
+        $this->assertSame(md5(file_get_contents(__DIR__.'/../LICENSE')), md5($contents));
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test2')->findOneColumnAsString('file_content');
+        $this->assertSame(md5(file_get_contents(__FILE__)), md5($contents));
+
+        $result = $this->db->largeObject('large_objects')->updateFromFile('file_content', __DIR__.'/../composer.json');
+        $this->assertTrue($result);
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test1')->findOneColumnAsString('file_content');
+        $this->assertSame(md5(file_get_contents(__DIR__.'/../composer.json')), md5($contents));
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test2')->findOneColumnAsString('file_content');
+        $this->assertSame(md5(file_get_contents(__DIR__.'/../composer.json')), md5($contents));
+    }
+}
diff --git a/libs/picodb/tests/PostgresSchemaTest.php b/libs/picodb/tests/PostgresSchemaTest.php
new file mode 100644
index 00000000..5ecf1cc5
--- /dev/null
+++ b/libs/picodb/tests/PostgresSchemaTest.php
@@ -0,0 +1,40 @@
+<?php
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+require_once __DIR__.'/SchemaFixture.php';
+
+class PostgresSchemaTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var PicoDb\Database
+     */
+    private $db;
+
+    public function setUp()
+    {
+        $this->db = new PicoDb\Database(array('driver' => 'postgres', 'hostname' => 'localhost', 'username' => 'postgres', 'password' => 'postgres', 'database' => 'picodb'));
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS test1');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS test2');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS schema_version');
+    }
+
+    public function testMigrations()
+    {
+        $this->assertTrue($this->db->schema()->check(2));
+        $this->assertEquals(2, $this->db->getDriver()->getSchemaVersion());
+    }
+
+    public function testFailedMigrations()
+    {
+        $this->assertEquals(0, $this->db->getDriver()->getSchemaVersion());
+        $this->assertFalse($this->db->schema()->check(3));
+        $this->assertEquals(2, $this->db->getDriver()->getSchemaVersion());
+
+        $logs = $this->db->getLogMessages();
+        $this->assertNotEmpty($logs);
+        $this->assertEquals('Running migration \Schema\version_1', $logs[0]);
+        $this->assertEquals('Running migration \Schema\version_2', $logs[1]);
+        $this->assertEquals('Running migration \Schema\version_3', $logs[2]);
+        $this->assertStringStartsWith('SQLSTATE[42601]: Syntax error', $logs[3]);
+    }
+}
diff --git a/libs/picodb/tests/PostgresTableTest.php b/libs/picodb/tests/PostgresTableTest.php
new file mode 100644
index 00000000..dc852adf
--- /dev/null
+++ b/libs/picodb/tests/PostgresTableTest.php
@@ -0,0 +1,355 @@
+<?php
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+use PicoDb\Database;
+use PicoDb\Table;
+
+class PostgresTableTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var PicoDb\Database
+     */
+    private $db;
+
+    public function setUp()
+    {
+        $this->db = new Database(array('driver' => 'postgres', 'hostname' => 'localhost', 'username' => 'postgres', 'password' => 'postgres', 'database' => 'picodb'));
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS test1');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS test2');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS foobar');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS foobar_persist');
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS schema_version');
+    }
+
+    public function testSelect()
+    {
+        $this->assertEquals('SELECT 1 FROM "test"', $this->db->table('test')->select(1)->buildSelectQuery());
+    }
+
+    public function testColumns()
+    {
+        $this->assertEquals('SELECT "a", "b" FROM "test"', $this->db->table('test')->columns('a', 'b')->buildSelectQuery());
+    }
+
+    public function testDistinct()
+    {
+        $this->assertEquals('SELECT DISTINCT "a", "b" FROM "test"', $this->db->table('test')->distinct('a', 'b')->buildSelectQuery());
+    }
+
+    public function testGroupBy()
+    {
+        $this->assertEquals('SELECT * FROM "test"   GROUP BY "a"', $this->db->table('test')->groupBy('a')->buildSelectQuery());
+    }
+
+    public function testOrderBy()
+    {
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" ASC', $this->db->table('test')->asc('a')->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" ASC', $this->db->table('test')->orderBy('a', Table::SORT_ASC)->buildSelectQuery());
+
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" DESC', $this->db->table('test')->desc('a')->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" DESC', $this->db->table('test')->orderBy('a', Table::SORT_DESC)->buildSelectQuery());
+
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" ASC, "b" ASC', $this->db->table('test')->asc('a')->asc('b')->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" DESC, "b" DESC', $this->db->table('test')->desc('a')->desc('b')->buildSelectQuery());
+
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" ASC, "b" ASC', $this->db->table('test')->orderBy('a')->orderBy('b')->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" DESC, "b" DESC', $this->db->table('test')->orderBy('a', Table::SORT_DESC)->orderBy('b', Table::SORT_DESC)->buildSelectQuery());
+
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" DESC, "b" ASC', $this->db->table('test')->desc('a')->asc('b')->buildSelectQuery());
+    }
+
+    public function testLimit()
+    {
+        $this->assertEquals('SELECT * FROM "test"      LIMIT 10', $this->db->table('test')->limit(10)->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"', $this->db->table('test')->limit(null)->buildSelectQuery());
+    }
+
+    public function testOffset()
+    {
+        $this->assertEquals('SELECT * FROM "test"       OFFSET 0', $this->db->table('test')->offset(0)->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"       OFFSET 10', $this->db->table('test')->offset(10)->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"', $this->db->table('test')->limit(null)->buildSelectQuery());
+    }
+
+    public function testLimitOffset()
+    {
+        $this->assertEquals('SELECT * FROM "test"      LIMIT 2  OFFSET 0', $this->db->table('test')->offset(0)->limit(2)->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"      LIMIT 5  OFFSET 10', $this->db->table('test')->offset(10)->limit(5)->buildSelectQuery());
+    }
+
+    public function testSubquery()
+    {
+        $this->assertEquals('SELECT (SELECT 1 FROM "foobar" WHERE 1=1) AS "b" FROM "test"', $this->db->table('test')->subquery('SELECT 1 FROM "foobar" WHERE 1=1', 'b')->buildSelectQuery());
+    }
+
+    public function testConditionEqual()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" = ? AND "b" = ?', $table->eq('a', 2)->eq('b', 'foobar')->buildSelectQuery());
+        $this->assertEquals(array(2, 'foobar'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionNotEqual()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" != ?', $table->neq('a', 2)->buildSelectQuery());
+        $this->assertEquals(array(2), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionIn()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" IN (?, ?)', $table->in('a', array('b', 'c'))->buildSelectQuery());
+        $this->assertEquals(array('b', 'c'), $table->getConditionBuilder()->getValues());
+
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"', $table->in('a', array())->buildSelectQuery());
+        $this->assertEquals(array(), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionInSubquery()
+    {
+        $table = $this->db->table('test');
+        $subquery = $this->db->table('test2')->columns('c')->eq('d', 'e');
+
+        $this->assertEquals(
+            'SELECT * FROM "test"   WHERE "a" IN (SELECT "c" FROM "test2"   WHERE "d" = ?)',
+            $table->inSubquery('a', $subquery)->buildSelectQuery()
+        );
+
+        $this->assertEquals(array('e'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionNotIn()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" NOT IN (?, ?)', $table->notIn('a', array('b', 'c'))->buildSelectQuery());
+        $this->assertEquals(array('b', 'c'), $table->getConditionBuilder()->getValues());
+
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"', $table->notIn('a', array())->buildSelectQuery());
+        $this->assertEquals(array(), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionNotInSubquery()
+    {
+        $table = $this->db->table('test');
+        $subquery = $this->db->table('test2')->columns('c')->eq('d', 'e');
+
+        $this->assertEquals(
+            'SELECT * FROM "test"   WHERE "a" NOT IN (SELECT "c" FROM "test2"   WHERE "d" = ?)',
+            $table->notInSubquery('a', $subquery)->buildSelectQuery()
+        );
+
+        $this->assertEquals(array('e'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionLike()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" LIKE ?', $table->like('a', '%foobar%')->buildSelectQuery());
+        $this->assertEquals(array('%foobar%'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionILike()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" ILIKE ?', $table->ilike('a', '%foobar%')->buildSelectQuery());
+        $this->assertEquals(array('%foobar%'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionGreaterThan()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" > ?', $table->gt('a', 5)->buildSelectQuery());
+        $this->assertEquals(array(5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionGreaterThanOrEqual()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" >= ?', $table->gte('a', 5)->buildSelectQuery());
+        $this->assertEquals(array(5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionLowerThan()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" < ?', $table->lt('a', 5)->buildSelectQuery());
+        $this->assertEquals(array(5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionLowerThanOrEqual()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" <= ?', $table->lte('a', 5)->buildSelectQuery());
+        $this->assertEquals(array(5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionIsNull()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" IS NOT NULL', $table->notNull('a')->buildSelectQuery());
+        $this->assertEquals(array(), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testCustomCondition()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE a=c AND "b" = ?', $table->addCondition('a=c')->eq('b', 4)->buildSelectQuery());
+        $this->assertEquals(array(4), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testOrConditions()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" IS NOT NULL AND ("b" = ? OR "c" >= ?)', $table->notNull('a')->beginOr()->eq('b', 2)->gte('c', 5)->closeOr()->buildSelectQuery());
+        $this->assertEquals(array(2, 5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testPersist()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar_persist (id SERIAL PRIMARY KEY, a VARCHAR(10))'));
+        $this->assertSame(1, $this->db->table('foobar_persist')->persist(array('a' => 'b')));
+    }
+
+    public function testInsertUpdate()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar (a TEXT)'));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 'b')));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 'c')));
+
+        $this->assertEquals(array(array('a' => 'b'), array('a' => 'c')), $this->db->table('foobar')->findAll());
+
+        $this->assertEquals(array('b', 'c'), $this->db->table('foobar')->findAllByColumn('a'));
+
+        $this->assertEquals(array('a' => 'b'), $this->db->table('foobar')->findOne());
+
+        $this->assertEquals('b', $this->db->table('foobar')->findOneColumn('a'));
+
+        $this->assertTrue($this->db->table('foobar')->exists());
+        $this->assertTrue($this->db->table('foobar')->eq('a', 'c')->exists());
+        $this->assertFalse($this->db->table('foobar')->eq('a', 'e')->exists());
+
+        $this->assertEquals(2, $this->db->table('foobar')->count());
+        $this->assertEquals(1, $this->db->table('foobar')->eq('a', 'c')->count());
+        $this->assertEquals(0, $this->db->table('foobar')->eq('a', 'e')->count());
+
+        $this->assertTrue($this->db->table('foobar')->eq('a', 'c')->remove());
+        $this->assertFalse($this->db->table('foobar')->eq('a', 'e')->remove());
+
+        $this->assertTrue($this->db->table('foobar')->eq('a', 'b')->update(array('a' => 'test')));
+        $this->assertTrue($this->db->table('foobar')->eq('a', 'lol')->update(array('a' => 'test')));
+
+        $this->assertNotEmpty($this->db->table('foobar')->eq('a', 'test')->findOne());
+        $this->assertNull($this->db->table('foobar')->eq('a', 'lol')->findOne());
+
+        $this->assertTrue($this->db->table('foobar')->eq('a', 'test')->save(array('a' => 'plop')));
+        $this->assertEquals(1, $this->db->table('foobar')->count());
+    }
+
+    public function testSumColumn()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar (b REAL, c REAL)'));
+        $this->assertTrue($this->db->table('foobar')->insert(array('b' => 2, 'c' => 3.3)));
+
+        $this->assertTrue($this->db->table('foobar')->sumColumn('b', 2.5)->sumColumn('c', 3)->update());
+
+        $this->assertEquals(
+            array('b' => 4.5, 'c' => 6.3),
+            $this->db->table('foobar')->findOne()
+        );
+    }
+
+    public function testSum()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar (a INTEGER)'));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 2)));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 5)));
+        $this->assertEquals(7, $this->db->table('foobar')->sum('a'));
+    }
+
+    public function testIncrement()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar (a INTEGER DEFAULT 0, b INTEGER DEFAULT 0)'));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 2, 'b' => 5)));
+        $this->assertTrue($this->db->table('foobar')->eq('b', 5)->increment('a', 3));
+        $this->assertEquals(5, $this->db->table('foobar')->findOneColumn('a'));
+    }
+
+    public function testLeftJoin()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE test1 (a INTEGER NOT NULL, foreign_key INTEGER NOT NULL)'));
+        $this->assertNotFalse($this->db->execute('CREATE TABLE test2 (id INTEGER NOT NULL, b INTEGER NOT NULL)'));
+
+        $this->assertTrue($this->db->table('test2')->insert(array('id' => 42, 'b' => 2)));
+        $this->assertTrue($this->db->table('test1')->insert(array('a' => 18, 'foreign_key' => 42)));
+
+        $this->assertEquals(
+            array('a' => 18, 'b' => 2),
+            $this->db->table('test2')->columns('a', 'b')->eq('a', 18)->left('test1', 't1', 'foreign_key', 'test2', 'id')->findOne()
+        );
+
+        $this->assertEquals(
+            array('a' => 18, 'b' => 2),
+            $this->db->table('test2')->columns('a', 'b')->eq('a', 18)->join('test1', 'foreign_key', 'id')->findOne()
+        );
+
+        $this->assertEquals(
+            array('a' => 18, 'b' => 2),
+            $this->db->table('test1')->columns('a', 'b')->join('test2', 'id', 'foreign_key')->findOne()
+        );
+    }
+
+    public function testHashTable()
+    {
+        $this->assertNotFalse($this->db->execute(
+            'CREATE TABLE foobar (
+                column1 TEXT NOT NULL UNIQUE,
+                column2 TEXT default NULL
+            )'
+        ));
+
+        $this->assertTrue($this->db->table('foobar')->insert(array('column1' => 'option1', 'column2' => 'value1')));
+        $this->assertTrue($this->db->table('foobar')->insert(array('column1' => 'option2', 'column2' => 'value2')));
+        $this->assertTrue($this->db->table('foobar')->insert(array('column1' => 'option3', 'column2' => 'value3')));
+
+        $values = array(
+            'option1' => 'hey',
+            'option4' => 'ho',
+        );
+
+        $this->assertTrue($this->db->hashtable('foobar')->columnKey('column1')->columnValue('column2')->put($values));
+
+        $this->assertEquals(
+            array('option2' => 'value2', 'option4' => 'ho'),
+            $this->db->hashtable('foobar')->columnKey('column1')->columnValue('column2')->get('option2', 'option4')
+        );
+
+        $this->assertEquals(
+            array('option2' => 'value2', 'option3' => 'value3', 'option1' => 'hey', 'option4' => 'ho'),
+            $this->db->hashtable('foobar')->columnKey('column1')->columnValue('column2')->get()
+        );
+
+        $this->assertEquals(
+            array('option2' => 'value2', 'option3' => 'value3', 'option1' => 'hey', 'option4' => 'ho'),
+            $this->db->hashtable('foobar')->getAll('column1', 'column2')
+        );
+    }
+}
diff --git a/libs/picodb/tests/SchemaFixture.php b/libs/picodb/tests/SchemaFixture.php
new file mode 100644
index 00000000..fe4b5031
--- /dev/null
+++ b/libs/picodb/tests/SchemaFixture.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace Schema;
+
+use PDO;
+
+function version_1(PDO $pdo)
+{
+    $pdo->exec('CREATE TABLE test1 (column1 TEXT)');
+}
+
+function version_2(PDO $pdo)
+{
+    $pdo->exec('CREATE TABLE test2 (column2 TEXT)');
+}
+
+function version_3(PDO $pdo)
+{
+    // Simulate an error
+    $pdo->exec('CREATE TABL');
+}
diff --git a/libs/picodb/tests/SqliteDatabaseTest.php b/libs/picodb/tests/SqliteDatabaseTest.php
new file mode 100644
index 00000000..628adb07
--- /dev/null
+++ b/libs/picodb/tests/SqliteDatabaseTest.php
@@ -0,0 +1,120 @@
+<?php
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+use PicoDb\Database;
+
+class SqliteDatabaseTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var PicoDb\Database
+     */
+    private $db;
+
+    public function setUp()
+    {
+        $this->db = new Database(array('driver' => 'sqlite', 'filename' => ':memory:'));
+    }
+
+    public function testEscapeIdentifer()
+    {
+        $this->assertEquals('"a"', $this->db->escapeIdentifier('a'));
+        $this->assertEquals('a.b', $this->db->escapeIdentifier('a.b'));
+        $this->assertEquals('"c"."a"', $this->db->escapeIdentifier('a', 'c'));
+        $this->assertEquals('a.b', $this->db->escapeIdentifier('a.b', 'c'));
+        $this->assertEquals('SELECT COUNT(*) FROM test', $this->db->escapeIdentifier('SELECT COUNT(*) FROM test'));
+        $this->assertEquals('SELECT COUNT(*) FROM test', $this->db->escapeIdentifier('SELECT COUNT(*) FROM test', 'b'));
+    }
+
+    public function testEscapeIdentiferList()
+    {
+        $this->assertEquals(array('"c"."a"', '"c"."b"'), $this->db->escapeIdentifierList(array('a', 'b'), 'c'));
+        $this->assertEquals(array('"a"', 'd.b'), $this->db->escapeIdentifierList(array('a', 'd.b')));
+    }
+
+    public function testThatPreparedStatementWorks()
+    {
+        $this->db->getConnection()->exec('CREATE TABLE foobar (id INTEGER PRIMARY KEY, something TEXT)');
+        $this->db->execute('INSERT INTO foobar (something) VALUES (?)', array('a'));
+        $this->assertEquals(1, $this->db->getLastId());
+        $this->assertEquals('a', $this->db->execute('SELECT something FROM foobar WHERE something=?', array('a'))->fetchColumn());
+    }
+
+    /**
+     * @expectedException PicoDb\SQLException
+     */
+    public function testBadSQLQuery()
+    {
+        $this->db->execute('INSERT INTO foobar');
+    }
+
+    public function testDuplicateKey()
+    {
+        $this->db->getConnection()->exec('CREATE TABLE foobar (something TEXT UNIQUE)');
+
+        $this->assertNotFalse($this->db->execute('INSERT INTO foobar (something) VALUES (?)', array('a')));
+        $this->assertFalse($this->db->execute('INSERT INTO foobar (something) VALUES (?)', array('a')));
+
+        $this->assertEquals(1, $this->db->execute('SELECT COUNT(*) FROM foobar WHERE something=?', array('a'))->fetchColumn());
+    }
+
+    public function testThatTransactionReturnsAValue()
+    {
+        $this->assertEquals('a', $this->db->transaction(function (Database $db) {
+            $db->getConnection()->exec('CREATE TABLE foobar (something TEXT UNIQUE)');
+            $db->execute('INSERT INTO foobar (something) VALUES (?)', array('a'));
+
+            return $db->execute('SELECT something FROM foobar WHERE something=?', array('a'))->fetchColumn();
+        }));
+    }
+
+    public function testThatTransactionReturnsTrue()
+    {
+        $this->assertTrue($this->db->transaction(function (Database $db) {
+            $db->getConnection()->exec('CREATE TABLE foobar (something TEXT UNIQUE)');
+            $db->execute('INSERT INTO foobar (something) VALUES (?)', array('a'));
+        }));
+    }
+
+    /**
+     * @expectedException PicoDb\SQLException
+     */
+    public function testThatTransactionThrowExceptionWhenRollbacked()
+    {
+        $this->assertFalse($this->db->transaction(function (Database $db) {
+            $db->getConnection()->exec('CREATE TABL');
+        }));
+    }
+
+    public function testThatTransactionReturnsFalseWhithDuplicateKey()
+    {
+        $this->assertFalse($this->db->transaction(function (Database $db) {
+            $db->getConnection()->exec('CREATE TABLE foobar (something TEXT UNIQUE)');
+            $r1 = $db->execute('INSERT INTO foobar (something) VALUES (?)', array('a'));
+            $r2 = $db->execute('INSERT INTO foobar (something) VALUES (?)', array('a'));
+            return $r1 && $r2;
+        }));
+    }
+
+    public function testGetInstance()
+    {
+        Database::setInstance('main', function () {
+            return new Database(array('driver' => 'sqlite', 'filename' => ':memory:'));
+        });
+
+        $instance1 = Database::getInstance('main');
+        $instance2 = Database::getInstance('main');
+
+        $this->assertInstanceOf('PicoDb\Database', $instance1);
+        $this->assertInstanceOf('PicoDb\Database', $instance2);
+        $this->assertTrue($instance1 === $instance2);
+    }
+
+    /**
+     * @expectedException LogicException
+     */
+    public function testGetMissingInstance()
+    {
+        Database::getInstance('notfound');
+    }
+}
diff --git a/libs/picodb/tests/SqliteDriverTest.php b/libs/picodb/tests/SqliteDriverTest.php
new file mode 100644
index 00000000..9965a39c
--- /dev/null
+++ b/libs/picodb/tests/SqliteDriverTest.php
@@ -0,0 +1,70 @@
+<?php
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+use PicoDb\Driver\Sqlite;
+
+class SqliteDriverTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var PicoDb\Driver\Sqlite
+     */
+    private $driver;
+
+    public function setUp()
+    {
+        $this->driver = new Sqlite(array('filename' => ':memory:'));
+    }
+
+    /**
+     * @expectedException LogicException
+     */
+    public function testMissingRequiredParameter()
+    {
+        new Sqlite(array());
+    }
+
+    public function testDuplicateKeyError()
+    {
+        $this->assertFalse($this->driver->isDuplicateKeyError(1234));
+        $this->assertTrue($this->driver->isDuplicateKeyError(23000));
+    }
+
+    public function testOperator()
+    {
+        $this->assertEquals('LIKE', $this->driver->getOperator('LIKE'));
+        $this->assertEquals('LIKE', $this->driver->getOperator('ILIKE'));
+        $this->assertEquals('', $this->driver->getOperator('FOO'));
+    }
+
+    public function testSchemaVersion()
+    {
+        $this->assertEquals(0, $this->driver->getSchemaVersion());
+
+        $this->driver->setSchemaVersion(1);
+        $this->assertEquals(1, $this->driver->getSchemaVersion());
+
+        $this->driver->setSchemaVersion(42);
+        $this->assertEquals(42, $this->driver->getSchemaVersion());
+    }
+
+    public function testLastInsertId()
+    {
+        $this->assertEquals(0, $this->driver->getLastId());
+
+        $this->driver->getConnection()->exec('CREATE TABLE foobar (id INTEGER PRIMARY KEY, something TEXT)');
+        $this->driver->getConnection()->exec('INSERT INTO foobar (something) VALUES (1)');
+
+        $this->assertEquals(1, $this->driver->getLastId());
+    }
+
+    public function testEscape()
+    {
+        $this->assertEquals('"foobar"', $this->driver->escape('foobar'));
+    }
+
+    public function testDatabaseVersion()
+    {
+        $this->assertStringStartsWith('3.', $this->driver->getDatabaseVersion());
+    }
+}
diff --git a/libs/picodb/tests/SqliteLobtest.php b/libs/picodb/tests/SqliteLobtest.php
new file mode 100644
index 00000000..d0889655
--- /dev/null
+++ b/libs/picodb/tests/SqliteLobtest.php
@@ -0,0 +1,84 @@
+<?php
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+use PicoDb\Database;
+
+class SqliteLobTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var PicoDb\Database
+     */
+    private $db;
+
+    public function setUp()
+    {
+        $this->db = new Database(array('driver' => 'sqlite', 'filename' => ':memory:'));
+        $this->db->getConnection()->exec('DROP TABLE IF EXISTS large_objects');
+        $this->db->getConnection()->exec('CREATE TABLE large_objects (id VARCHAR(20), file_content BLOB)');
+    }
+
+    public function testInsert()
+    {
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__, array('id' => 'test'));
+        $this->assertTrue($result);
+    }
+
+    public function testInsertFromString()
+    {
+        $data = 'test';
+        $result = $this->db->largeObject('large_objects')->insertFromString('file_content', $data, array('id' => 'test'));
+        $this->assertTrue($result);
+    }
+
+    public function testInsertWithOptionalParams()
+    {
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__);
+        $this->assertTrue($result);
+    }
+
+    public function testFindOneColumnAsStream()
+    {
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__, array('id' => 'test'));
+        $this->assertTrue($result);
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test')->findOneColumnAsStream('file_content');
+        $this->assertSame(md5(file_get_contents(__FILE__)), md5($contents));
+    }
+
+    public function testFindOneColumnAsString()
+    {
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__, array('id' => 'test'));
+        $this->assertTrue($result);
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test')->findOneColumnAsString('file_content');
+        $this->assertSame(md5(file_get_contents(__FILE__)), md5($contents));
+    }
+
+    public function testUpdate()
+    {
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__, array('id' => 'test1'));
+        $this->assertTrue($result);
+
+        $result = $this->db->largeObject('large_objects')->insertFromFile('file_content', __FILE__, array('id' => 'test2'));
+        $this->assertTrue($result);
+
+        $result = $this->db->largeObject('large_objects')->eq('id', 'test1')->updateFromFile('file_content', __DIR__.'/../LICENSE');
+        $this->assertTrue($result);
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test1')->findOneColumnAsString('file_content');
+        $this->assertSame(md5(file_get_contents(__DIR__.'/../LICENSE')), md5($contents));
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test2')->findOneColumnAsString('file_content');
+        $this->assertSame(md5(file_get_contents(__FILE__)), md5($contents));
+
+        $result = $this->db->largeObject('large_objects')->updateFromFile('file_content', __DIR__.'/../composer.json');
+        $this->assertTrue($result);
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test1')->findOneColumnAsString('file_content');
+        $this->assertSame(md5(file_get_contents(__DIR__.'/../composer.json')), md5($contents));
+
+        $contents = $this->db->largeObject('large_objects')->eq('id', 'test2')->findOneColumnAsString('file_content');
+        $this->assertSame(md5(file_get_contents(__DIR__.'/../composer.json')), md5($contents));
+    }
+}
diff --git a/libs/picodb/tests/SqliteSchemaTest.php b/libs/picodb/tests/SqliteSchemaTest.php
new file mode 100644
index 00000000..7522e10d
--- /dev/null
+++ b/libs/picodb/tests/SqliteSchemaTest.php
@@ -0,0 +1,36 @@
+<?php
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+require_once __DIR__.'/SchemaFixture.php';
+
+class SqliteSchemaTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var PicoDb\Database
+     */
+    private $db;
+
+    public function setUp()
+    {
+        $this->db = new PicoDb\Database(array('driver' => 'sqlite', 'filename' => ':memory:'));
+    }
+
+    public function testMigrations()
+    {
+        $this->assertTrue($this->db->schema()->check(2));
+        $this->assertEquals(2, $this->db->getDriver()->getSchemaVersion());
+    }
+
+    public function testFailedMigrations()
+    {
+        $this->assertFalse($this->db->schema()->check(3));
+        $this->assertEquals(2, $this->db->getDriver()->getSchemaVersion());
+
+        $logs = $this->db->getLogMessages();
+        $this->assertNotEmpty($logs);
+        $this->assertEquals('Running migration \Schema\version_1', $logs[0]);
+        $this->assertEquals('Running migration \Schema\version_2', $logs[1]);
+        $this->assertEquals('Running migration \Schema\version_3', $logs[2]);
+        $this->assertEquals('SQLSTATE[HY000]: General error: 1 near "TABL": syntax error', $logs[3]);
+    }
+}
diff --git a/libs/picodb/tests/SqliteTableTest.php b/libs/picodb/tests/SqliteTableTest.php
new file mode 100644
index 00000000..dae718fa
--- /dev/null
+++ b/libs/picodb/tests/SqliteTableTest.php
@@ -0,0 +1,444 @@
+<?php
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+use PicoDb\Database;
+use PicoDb\Table;
+
+class SqliteTableTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * @var PicoDb\Database
+     */
+    private $db;
+
+    public function setUp()
+    {
+        $this->db = new Database(array('driver' => 'sqlite', 'filename' => ':memory:'));
+    }
+
+    public function testSelect()
+    {
+        $this->assertEquals('SELECT 1 FROM "test"', $this->db->table('test')->select(1)->buildSelectQuery());
+    }
+
+    public function testColumns()
+    {
+        $this->assertEquals('SELECT "a", "b" FROM "test"', $this->db->table('test')->columns('a', 'b')->buildSelectQuery());
+    }
+
+    public function testDistinct()
+    {
+        $this->assertEquals('SELECT DISTINCT "a", "b" FROM "test"', $this->db->table('test')->distinct('a', 'b')->buildSelectQuery());
+    }
+
+    public function testGroupBy()
+    {
+        $this->assertEquals('SELECT * FROM "test"   GROUP BY "a"', $this->db->table('test')->groupBy('a')->buildSelectQuery());
+    }
+
+    public function testOrderBy()
+    {
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" ASC', $this->db->table('test')->asc('a')->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" ASC', $this->db->table('test')->orderBy('a', Table::SORT_ASC)->buildSelectQuery());
+
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" DESC', $this->db->table('test')->desc('a')->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" DESC', $this->db->table('test')->orderBy('a', Table::SORT_DESC)->buildSelectQuery());
+
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" ASC, "b" ASC', $this->db->table('test')->asc('a')->asc('b')->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" DESC, "b" DESC', $this->db->table('test')->desc('a')->desc('b')->buildSelectQuery());
+
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" ASC, "b" ASC', $this->db->table('test')->orderBy('a')->orderBy('b')->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" DESC, "b" DESC', $this->db->table('test')->orderBy('a', Table::SORT_DESC)->orderBy('b', Table::SORT_DESC)->buildSelectQuery());
+
+        $this->assertEquals('SELECT * FROM "test"     ORDER BY "a" DESC, "b" ASC', $this->db->table('test')->desc('a')->asc('b')->buildSelectQuery());
+    }
+
+    public function testLimit()
+    {
+        $this->assertEquals('SELECT * FROM "test"      LIMIT 10', $this->db->table('test')->limit(10)->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"', $this->db->table('test')->limit(null)->buildSelectQuery());
+    }
+
+    public function testOffset()
+    {
+        $this->assertEquals('SELECT * FROM "test"       OFFSET 0', $this->db->table('test')->offset(0)->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"       OFFSET 10', $this->db->table('test')->offset(10)->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"', $this->db->table('test')->limit(null)->buildSelectQuery());
+    }
+
+    public function testLimitOffset()
+    {
+        $this->assertEquals('SELECT * FROM "test"      LIMIT 2  OFFSET 0', $this->db->table('test')->offset(0)->limit(2)->buildSelectQuery());
+        $this->assertEquals('SELECT * FROM "test"      LIMIT 5  OFFSET 10', $this->db->table('test')->offset(10)->limit(5)->buildSelectQuery());
+    }
+
+    public function testSubquery()
+    {
+        $this->assertEquals('SELECT (SELECT 1 FROM "foobar" WHERE 1=1) AS "b" FROM "test"', $this->db->table('test')->subquery('SELECT 1 FROM "foobar" WHERE 1=1', 'b')->buildSelectQuery());
+    }
+
+    public function testConditionEqual()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" = ? AND "b" = ?', $table->eq('a', 2)->eq('b', 'foobar')->buildSelectQuery());
+        $this->assertEquals(array(2, 'foobar'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionNotEqual()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" != ?', $table->neq('a', 2)->buildSelectQuery());
+        $this->assertEquals(array(2), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionIn()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" IN (?, ?)', $table->in('a', array('b', 'c'))->buildSelectQuery());
+        $this->assertEquals(array('b', 'c'), $table->getConditionBuilder()->getValues());
+
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"', $table->in('a', array())->buildSelectQuery());
+        $this->assertEquals(array(), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionInSubquery()
+    {
+        $table = $this->db->table('test');
+        $subquery = $this->db->table('test2')->columns('c')->eq('d', 'e');
+
+        $this->assertEquals(
+            'SELECT * FROM "test"   WHERE "a" IN (SELECT "c" FROM "test2"   WHERE "d" = ?)',
+            $table->inSubquery('a', $subquery)->buildSelectQuery()
+        );
+
+        $this->assertEquals(array('e'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionNotIn()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" NOT IN (?, ?)', $table->notIn('a', array('b', 'c'))->buildSelectQuery());
+        $this->assertEquals(array('b', 'c'), $table->getConditionBuilder()->getValues());
+
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"', $table->notIn('a', array())->buildSelectQuery());
+        $this->assertEquals(array(), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionNotInSubquery()
+    {
+        $table = $this->db->table('test');
+        $subquery = $this->db->table('test2')->columns('c')->eq('d', 'e');
+
+        $this->assertEquals(
+            'SELECT * FROM "test"   WHERE "a" NOT IN (SELECT "c" FROM "test2"   WHERE "d" = ?)',
+            $table->notInSubquery('a', $subquery)->buildSelectQuery()
+        );
+
+        $this->assertEquals(array('e'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionLike()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" LIKE ?', $table->like('a', '%foobar%')->buildSelectQuery());
+        $this->assertEquals(array('%foobar%'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionILike()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" LIKE ?', $table->ilike('a', '%foobar%')->buildSelectQuery());
+        $this->assertEquals(array('%foobar%'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionGreaterThan()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" > ?', $table->gt('a', 5)->buildSelectQuery());
+        $this->assertEquals(array(5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionGreaterThanInSubquery()
+    {
+        $table = $this->db->table('test');
+        $subquery = $this->db->table('test2')->columns('c')->eq('d', 'e');
+
+        $this->assertEquals(
+            'SELECT * FROM "test"   WHERE "a" > (SELECT "c" FROM "test2"   WHERE "d" = ?)',
+            $table->gtSubquery('a', $subquery)->buildSelectQuery()
+        );
+
+        $this->assertEquals(array('e'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionGreaterThanOrEqual()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" >= ?', $table->gte('a', 5)->buildSelectQuery());
+        $this->assertEquals(array(5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionGreaterThanEqualInSubquery()
+    {
+        $table = $this->db->table('test');
+        $subquery = $this->db->table('test2')->columns('c')->eq('d', 'e');
+
+        $this->assertEquals(
+            'SELECT * FROM "test"   WHERE "a" >= (SELECT "c" FROM "test2"   WHERE "d" = ?)',
+            $table->gteSubquery('a', $subquery)->buildSelectQuery()
+        );
+
+        $this->assertEquals(array('e'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionLowerThan()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" < ?', $table->lt('a', 5)->buildSelectQuery());
+        $this->assertEquals(array(5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionLowerThanInSubquery()
+    {
+        $table = $this->db->table('test');
+        $subquery = $this->db->table('test2')->columns('c')->eq('d', 'e');
+
+        $this->assertEquals(
+            'SELECT * FROM "test"   WHERE "a" < (SELECT "c" FROM "test2"   WHERE "d" = ?)',
+            $table->ltSubquery('a', $subquery)->buildSelectQuery()
+        );
+
+        $this->assertEquals(array('e'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionLowerThanOrEqual()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" <= ?', $table->lte('a', 5)->buildSelectQuery());
+        $this->assertEquals(array(5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionLowerThanEqualInSubquery()
+    {
+        $table = $this->db->table('test');
+        $subquery = $this->db->table('test2')->columns('c')->eq('d', 'e');
+
+        $this->assertEquals(
+            'SELECT * FROM "test"   WHERE "a" <= (SELECT "c" FROM "test2"   WHERE "d" = ?)',
+            $table->lteSubquery('a', $subquery)->buildSelectQuery()
+        );
+
+        $this->assertEquals(array('e'), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testConditionIsNull()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" IS NOT NULL', $table->notNull('a')->buildSelectQuery());
+        $this->assertEquals(array(), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testCustomCondition()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE a=c AND "b" = ?', $table->addCondition('a=c')->eq('b', 4)->buildSelectQuery());
+        $this->assertEquals(array(4), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testOrConditions()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals('SELECT * FROM "test"   WHERE "a" IS NOT NULL AND ("b" = ? OR "c" >= ?)', $table->notNull('a')->beginOr()->eq('b', 2)->gte('c', 5)->closeOr()->buildSelectQuery());
+        $this->assertEquals(array(2, 5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testMultipleOrConditions()
+    {
+        $table = $this->db->table('test');
+
+        $this->assertEquals(
+            'SELECT * FROM "test"   WHERE "a" IS NOT NULL AND ("b" = ? OR ("b" != ? OR "c" = ?) OR "c" >= ?)',
+            $table
+                ->notNull('a')
+                ->beginOr()
+                    ->eq('b', 2)
+                    ->beginOr()
+                        ->neq('b', 6)
+                        ->eq('c', 3)
+                    ->closeOr()
+                    ->gte('c', 5)
+                ->closeOr()
+                ->buildSelectQuery()
+        );
+
+        $this->assertEquals(array(2, 6, 3, 5), $table->getConditionBuilder()->getValues());
+    }
+
+    public function testPersist()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar_persist (id INTEGER PRIMARY KEY, a TEXT)'));
+        $this->assertSame(1, $this->db->table('foobar_persist')->persist(array('a' => 'b')));
+    }
+
+    public function testInsertUpdate()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar (a TEXT)'));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 'b')));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 'c')));
+
+        $this->assertEquals(array(array('a' => 'b'), array('a' => 'c')), $this->db->table('foobar')->findAll());
+
+        $this->assertEquals(array('b', 'c'), $this->db->table('foobar')->findAllByColumn('a'));
+
+        $this->assertEquals(array('a' => 'b'), $this->db->table('foobar')->findOne());
+
+        $this->assertEquals('b', $this->db->table('foobar')->findOneColumn('a'));
+
+        $this->assertTrue($this->db->table('foobar')->exists());
+        $this->assertTrue($this->db->table('foobar')->eq('a', 'c')->exists());
+        $this->assertFalse($this->db->table('foobar')->eq('a', 'e')->exists());
+
+        $this->assertEquals(2, $this->db->table('foobar')->count());
+        $this->assertEquals(1, $this->db->table('foobar')->eq('a', 'c')->count());
+        $this->assertEquals(0, $this->db->table('foobar')->eq('a', 'e')->count());
+
+        $this->assertTrue($this->db->table('foobar')->eq('a', 'c')->remove());
+        $this->assertFalse($this->db->table('foobar')->eq('a', 'e')->remove());
+
+        $this->assertTrue($this->db->table('foobar')->eq('a', 'b')->update(array('a' => 'test')));
+        $this->assertTrue($this->db->table('foobar')->eq('a', 'lol')->update(array('a' => 'test')));
+
+        $this->assertNotEmpty($this->db->table('foobar')->eq('a', 'test')->findOne());
+        $this->assertNull($this->db->table('foobar')->eq('a', 'lol')->findOne());
+
+        $this->assertTrue($this->db->table('foobar')->eq('a', 'test')->save(array('a' => 'plop')));
+        $this->assertEquals(1, $this->db->table('foobar')->count());
+    }
+
+    public function testSumColumn()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar (b REAL, c REAL)'));
+        $this->assertTrue($this->db->table('foobar')->insert(array('b' => 2, 'c' => 3.3)));
+
+        $this->assertTrue($this->db->table('foobar')->sumColumn('b', 2.5)->sumColumn('c', 3)->update());
+
+        $this->assertEquals(
+            array('b' => 4.5, 'c' => 6.3),
+            $this->db->table('foobar')->findOne()
+        );
+    }
+
+    public function testCallback()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar (a TEXT)'));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 'b')));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 'c')));
+
+        $func = function () {
+            return array('test');
+        };
+
+        $this->assertEquals(array('test'), $this->db->table('foobar')->callback($func)->findAll());
+        $this->assertEquals(array('plop'), $this->db->table('foobar')->callback(array($this, 'myCallback'))->findAll());
+    }
+
+    public function myCallback(array $records)
+    {
+        $this->assertEquals(array(array('a' => 'b'), array('a' => 'c')), $records);
+        return array('plop');
+    }
+
+    public function testSum()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar (a INTEGER)'));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 2)));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 5)));
+        $this->assertEquals(7, $this->db->table('foobar')->sum('a'));
+    }
+
+    public function testIncrement()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE foobar (a INTEGER DEFAULT 0, b INTEGER DEFAULT 0)'));
+        $this->assertTrue($this->db->table('foobar')->insert(array('a' => 2, 'b' => 5)));
+        $this->assertTrue($this->db->table('foobar')->eq('b', 5)->increment('a', 3));
+        $this->assertEquals(5, $this->db->table('foobar')->findOneColumn('a'));
+    }
+
+    public function testLeftJoin()
+    {
+        $this->assertNotFalse($this->db->execute('CREATE TABLE test1 (a INTEGER NOT NULL, foreign_key INTEGER NOT NULL)'));
+        $this->assertNotFalse($this->db->execute('CREATE TABLE test2 (id INTEGER NOT NULL, b INTEGER NOT NULL)'));
+
+        $this->assertTrue($this->db->table('test2')->insert(array('id' => 42, 'b' => 2)));
+        $this->assertTrue($this->db->table('test1')->insert(array('a' => 18, 'foreign_key' => 42)));
+
+        $this->assertEquals(
+            array('a' => 18, 'b' => 2),
+            $this->db->table('test2')->columns('a', 'b')->eq('a', 18)->left('test1', 't1', 'foreign_key', 'test2', 'id')->findOne()
+        );
+
+        $this->assertEquals(
+            array('a' => 18, 'b' => 2),
+            $this->db->table('test2')->columns('a', 'b')->eq('a', 18)->join('test1', 'foreign_key', 'id')->findOne()
+        );
+
+        $this->assertEquals(
+            array('a' => 18, 'b' => 2),
+            $this->db->table('test1')->columns('a', 'b')->join('test2', 'id', 'foreign_key')->findOne()
+        );
+    }
+
+    public function testHashTable()
+    {
+        $this->assertNotFalse($this->db->execute(
+            'CREATE TABLE toto (
+                column1 TEXT NOT NULL UNIQUE,
+                column2 TEXT default NULL
+            )'
+        ));
+
+        $this->assertTrue($this->db->table('toto')->insert(array('column1' => 'option1', 'column2' => 'value1')));
+        $this->assertTrue($this->db->table('toto')->insert(array('column1' => 'option2', 'column2' => 'value2')));
+        $this->assertTrue($this->db->table('toto')->insert(array('column1' => 'option3', 'column2' => 'value3')));
+
+        $values = array(
+            'option1' => 'hey',
+            'option4' => 'ho',
+        );
+
+        $this->assertTrue($this->db->hashtable('toto')->columnKey('column1')->columnValue('column2')->put($values));
+
+        $this->assertEquals(
+            array('option2' => 'value2', 'option4' => 'ho'),
+            $this->db->hashtable('toto')->columnKey('column1')->columnValue('column2')->get('option2', 'option4')
+        );
+
+        $this->assertEquals(
+            array('option2' => 'value2', 'option3' => 'value3', 'option1' => 'hey', 'option4' => 'ho'),
+            $this->db->hashtable('toto')->columnKey('column1')->columnValue('column2')->get()
+        );
+
+        $this->assertEquals(
+            array('option2' => 'value2', 'option3' => 'value3', 'option1' => 'hey', 'option4' => 'ho'),
+            $this->db->hashtable('toto')->getAll('column1', 'column2')
+        );
+    }
+}
diff --git a/libs/picodb/tests/UrlParserTest.php b/libs/picodb/tests/UrlParserTest.php
new file mode 100644
index 00000000..ede3d3a5
--- /dev/null
+++ b/libs/picodb/tests/UrlParserTest.php
@@ -0,0 +1,46 @@
+<?php
+
+use PicoDb\UrlParser;
+
+require_once __DIR__.'/../../../vendor/autoload.php';
+
+class UrlParserTest extends PHPUnit_Framework_TestCase
+{
+    public function testParseUrl()
+    {
+        $urlParser = UrlParser::getInstance();
+        $this->assertFalse($urlParser->isEnvironmentVariableDefined());
+
+        $settings = $urlParser->getSettings('postgres://user:pass@hostname:6212/db');
+        $this->assertEquals('postgres', $settings['driver']);
+        $this->assertEquals('user', $settings['username']);
+        $this->assertEquals('pass', $settings['password']);
+        $this->assertEquals('hostname', $settings['hostname']);
+        $this->assertEquals('6212', $settings['port']);
+        $this->assertEquals('db', $settings['database']);
+    }
+
+    public function testParseWrongUrl()
+    {
+        $urlParser = new UrlParser();
+        $settings = $urlParser->getSettings('/');
+        $this->assertEmpty($settings['driver']);
+        $this->assertFalse($urlParser->isEnvironmentVariableDefined());
+    }
+
+    public function testGetUrlFromEnvironment()
+    {
+        putenv('DATABASE_URL=postgres://user:pass@hostname:6212/db');
+
+        $urlParser = new UrlParser();
+        $this->assertTrue($urlParser->isEnvironmentVariableDefined());
+
+        $settings = $urlParser->getSettings();
+        $this->assertEquals('postgres', $settings['driver']);
+        $this->assertEquals('user', $settings['username']);
+        $this->assertEquals('pass', $settings['password']);
+        $this->assertEquals('hostname', $settings['hostname']);
+        $this->assertEquals('6212', $settings['port']);
+        $this->assertEquals('db', $settings['database']);
+    }
+}