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<?php
/**
* TEmailAddressValidator class file
*
* @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 System.Web.UI.WebControls
*/
/**
* Using TRegularExpressionValidator class
*/
Prado::using('System.Web.UI.WebControls.TRegularExpressionValidator');
/**
* TEmailAddressValidator class
*
* TEmailAddressValidator validates whether the value of an associated
* input component is a valid email address. It will check MX record
* if checkdnsrr() is available in the installed PHP.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @version $Revision: $ $Date: $
* @package System.Web.UI.WebControls
* @since 3.0
*/
class TEmailAddressValidator extends TRegularExpressionValidator
{
/**
* Regular expression used to validate the email address
*/
const EMAIL_REGEXP="\\w+([-+.]\\w+)*@\\w+([-.]\\w+)*\\.\\w+([-.]\\w+)*";
/**
* @return string the regular expression that determines the pattern used to validate a field.
*/
public function getRegularExpression()
{
$regex=parent::getRegularExpression();
return $regex===''?self::EMAIL_REGEXP:$regex;
}
/**
* Returns an array of javascript validator options.
* @return array javascript validator options.
*/
public function evaluateIsValid()
{
$valid=parent::evaluateIsValid();
if($valid && function_exists('checkdnsrr'))
{
if(($value=$this->getValidationValue($this->getValidationTarget()))!=='')
{
if(($pos=strpos($value,'@'))!==false)
{
$domain=substr($value,$pos+1);
return $domain===''?false:checkdnsrr($domain,'MX');
}
else
return false;
}
}
return $valid;
}
}
?>
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