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<?php
/**
* PRADO Requirements Checker script
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005 PradoSoft
* @license http://www.pradosoft.com/license/
* @version $Revision: $ $Date: $
* @package prado
*/
/**
* PRADO Requirements Checker script
*
* This script will check if your system meets the requirements for running PRADO.
* It will check if you are running the right version of PHP, if you included
* the right libraries and if your php.ini file settings are correct.
*
* This script is capable of displaying localized messages.
* All messages are stored in messages.txt. A localized message file is named as
* messsages-<language code>.txt, and it will be used when the client browser
* chooses the corresponding language.
* The script output uses a template named template.html.
* Its localized version is stored in template-<language code>.html.
*/
// TO BE CONFIRMED: PHP 5.1.0 has problem with I18N and L10N
/**
* @var array List of requirements (required or not, check item, hint)
*/
$requirements = array(
array(true,'version_compare(PHP_VERSION,"5.0.4",">=")','PHP version check','PHP 5.0.4 or higher required'),
array(false,'version_compare(PHP_VERSION,"5.1.0",">=")','PHP version check','PHP 5.1.0 or higher preferred'),
array(true,'class_exists("DOMDocument",false)','DOM extension check','DOM extension required'),
array(false,'function_exists("iconv")','ICONV extension check','ICONV extension optional'),
array(false,'extension_loaded("zlib")','Zlib extension check','Zlib extension optional'),
array(false,'extension_loaded("sqlite")','SQLite extension check','SQLite extension optional'),
array(false,'extension_loaded("memcache")','Memcache extension check','Memcache extension optional'),
array(false,'extension_loaded("apc")','APC extension check','APC extension optional'),
array(false,'extension_loaded("mcrypt")','Mcrypt extension check','Mcrypt extension optional'),
);
$results = "<table class=\"result\">\n";
$conclusion = 0;
foreach($requirements as $requirement)
{
list($required,$expression,$aspect,$hint)=$requirement;
eval('$ret='.$expression.';');
if($required)
{
if($ret)
$ret='passed';
else
{
$conclusion=1;
$ret='error';
}
}
else
{
if($ret)
$ret='passed';
else
{
if($conclusion!==1)
$conclusion=2;
$ret='warning';
}
}
$results.="<tr class=\"$ret\"><td class=\"$ret\">".lmessage($aspect)."</td><td class=\"$ret\">".lmessage($hint)."</td></tr>\n";
}
$results .= '</table>';
if($conclusion===0)
$conclusion=lmessage('all passed');
else if($conclusion===1)
$conclusion=lmessage('failed');
else
$conclusion=lmessage('passed with warnings');
$tokens = array(
'%%Conclusion%%' => $conclusion,
'%%Details%%' => $results,
'%%Version%%' => $_SERVER['SERVER_SOFTWARE'].' <a href="http://www.pradosoft.com/">PRADO</a>/'.getPradoVersion(),
'%%Time%%' => @strftime('%Y-%m-%d %H:%m',time()),
);
$lang=getPreferredLanguage();
$templateFile=dirname(__FILE__)."/template-$lang.html";
if(!is_file($templateFile))
$templateFile=dirname(__FILE__).'/template.html';
if(($content=@file_get_contents($templateFile))===false)
die("Unable to open template file '$templateFile'.");
header('Content-Type: text/html; charset=UTF-8');
echo strtr($content,$tokens);
/**
* Returns a localized message according to user preferred language.
* @param string message to be translated
* @return string translated message
*/
function lmessage($token)
{
static $messages=null;
if($messages===null)
{
$lang = getPreferredLanguage();
$msgFile=dirname(__FILE__)."/messages-$lang.txt";
if(!is_file($msgFile))
$msgFile=dirname(__FILE__).'/messages.txt';
if(($entries=@file($msgFile))!==false)
{
foreach($entries as $entry)
{
@list($code,$message)=explode('=',$entry,2);
$messages[trim($code)]=trim($message);
}
}
}
return isset($messages[$token])?$messages[$token]:$token;
}
/**
* Returns a list of user preferred languages.
* The languages are returned as an array. Each array element
* represents a single language preference. The languages are ordered
* according to user preferences. The first language is the most preferred.
* @return array list of user preferred languages.
*/
function getUserLanguages()
{
static $languages=null;
if($languages===null)
{
$languages=array();
foreach(explode(',',$_SERVER['HTTP_ACCEPT_LANGUAGE']) as $language)
{
$array=split(';q=',trim($language));
$languages[trim($array[0])]=isset($array[1])?(float)$array[1]:1.0;
}
arsort($languages);
$languages=array_keys($languages);
if(empty($languages))
$languages[0]='en';
}
return $languages;
}
/**
* Returns the most preferred language by the client user.
* @return string the most preferred language by the client user, defaults to English.
*/
function getPreferredLanguage()
{
static $language=null;
if($language===null)
{
$langs=getUserLanguages();
$lang=explode('-',$langs[0]);
if(empty($lang[0]) || !ctype_alpha($lang[0]))
$language='en';
else
$language=$lang[0];
}
return $language;
}
/**
* @return string Prado version
*/
function getPradoVersion()
{
$coreFile=dirname(__FILE__).'/../framework/PradoBase.php';
if(is_file($coreFile))
{
$contents=file_get_contents($coreFile);
$matches=array();
if(preg_match('/public static function getVersion.*?return \'(.*?)\'/ms',$contents,$matches)>0)
return $matches[1];
}
return '';
}
?>
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