lib/pear/HTML/QuickForm/Rule/Email.php

   1 <?php
   2 /* vim: set expandtab tabstop=4 shiftwidth=4: */
   3 // +----------------------------------------------------------------------+
   4 // | PHP version 4.0                                                      |
   5 // +----------------------------------------------------------------------+
   6 // | Copyright (c) 1997-2003 The PHP Group                                |
   7 // +----------------------------------------------------------------------+
   8 // | This source file is subject to version 2.0 of the PHP license,       |
   9 // | that is bundled with this package in the file LICENSE, and is        |
  10 // | available at through the world-wide-web at                           |
  11 // | http://www.php.net/license/2_02.txt.                                 |
  12 // | If you did not receive a copy of the PHP license and are unable to   |
  13 // | obtain it through the world-wide-web, please send a note to          |
  14 // | license@php.net so we can mail you a copy immediately.               |
  15 // +----------------------------------------------------------------------+
  16 // | Authors: Bertrand Mansion <bmansion@mamasam.com>                     |
  17 // +----------------------------------------------------------------------+
  18 //
  19 // $Id$
  20
  21 require_once('HTML/QuickForm/Rule.php');
  22
  23 /**
  24 * Email validation rule
  25 * @version     1.0
  26 */
  27 class HTML_QuickForm_Rule_Email extends HTML_QuickForm_Rule
  28 {
  29     var $regex = '/^((\"[^\"\f\n\r\t\v\b]+\")|([\w\!\#\$\%\&\'\*\+\-\~\/\^\`\|\{\}]+(\.[\w\!\#\$\%\&\'\*\+\-\~\/\^\`\|\{\}]+)*))@((\[(((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9])))\])|(((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9])))|((([A-Za-z0-9\-])+\.)+[A-Za-z\-]+))$/';
  30
  31     /**
  32      * Validates an email address
  33      *
  34      * @param     string    $email          Email address
  35      * @param     boolean   $checkDomain    True if dns check should be performed
  36      * @access    public
  37      * @return    boolean   true if email is valid
  38      */
  39     function validate($email, $checkDomain = false)
  40     {
  41         if (preg_match($this->regex, $email)) {
  42             if ($checkDomain && function_exists('checkdnsrr')) {
  43                 $tokens = explode('@', $email);
  44                 if (checkdnsrr($tokens[1], 'MX') || checkdnsrr($tokens[1], 'A')) {
  45                     return true;
  46                 }
  47                 return false;
  48             }
  49             return true;
  50         }
  51         return false;
  52     } // end func validate
  53
  54
  55     function getValidationScript($options = null)
  56     {
  57         return array("  var regex = " . $this->regex . ";\n", "{jsVar} != '' && !regex.test({jsVar})");
  58     } // end func getValidationScript
  59
  60 } // end class HTML_QuickForm_Rule_Email
  61 ?>