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   1  <?php
   2  /**
   3   * Zend Framework
   4   *
   5   * LICENSE
   6   *
   7   * This source file is subject to the new BSD license that is bundled
   8   * with this package in the file LICENSE.txt.
   9   * It is also available through the world-wide-web at this URL:
  10   * http://framework.zend.com/license/new-bsd
  11   * If you did not receive a copy of the license and are unable to
  12   * obtain it through the world-wide-web, please send an email
  13   * to [email protected] so we can send you a copy immediately.
  14   *
  15   * @category   Zend
  16   * @package    Zend_Validate
  17   * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
  18   * @license    http://framework.zend.com/license/new-bsd     New BSD License
  19   * @version    $Id$
  20   */
  21  
  22  /**
  23   * @see Zend_Validate_Abstract
  24   */
  25  require_once 'Zend/Validate/Abstract.php';
  26  
  27  /**
  28   * @category   Zend
  29   * @package    Zend_Validate
  30   * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
  31   * @license    http://framework.zend.com/license/new-bsd     New BSD License
  32   */
  33  class Zend_Validate_Hex extends Zend_Validate_Abstract
  34  {
  35      const INVALID = 'hexInvalid';
  36      const NOT_HEX = 'notHex';
  37  
  38      /**
  39       * Validation failure message template definitions
  40       *
  41       * @var array
  42       */
  43      protected $_messageTemplates = array(
  44          self::INVALID => "Invalid type given, value should be a string",
  45          self::NOT_HEX => "'%value%' has not only hexadecimal digit characters",
  46      );
  47  
  48      /**
  49       * Defined by Zend_Validate_Interface
  50       *
  51       * Returns true if and only if $value contains only hexadecimal digit characters
  52       *
  53       * @param  string $value
  54       * @return boolean
  55       */
  56      public function isValid($value)
  57      {
  58          if (!is_string($value) && !is_int($value)) {
  59              $this->_error(self::INVALID);
  60              return false;
  61          }
  62  
  63          $this->_setValue($value);
  64          if (!ctype_xdigit((string) $value)) {
  65              $this->_error(self::NOT_HEX);
  66              return false;
  67          }
  68  
  69          return true;
  70      }
  71  
  72  }