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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Validate
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * @see Zend_Validate_Abstract
  */
 // require_once 'Zend/Validate/Abstract.php';
 
 /**
  * @category   Zend
  * @package    Zend_Validate
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Validate_Hex extends Zend_Validate_Abstract
 {
     const INVALID = 'hexInvalid';
     const NOT_HEX = 'notHex';
 
     /**
      * Validation failure message template definitions
      *
      * @var array
      */
     protected $_messageTemplates = array(
         self::INVALID => "Invalid type given. String expected",
         self::NOT_HEX => "'%value%' has not only hexadecimal digit characters",
     );
 
     /**
      * Defined by Zend_Validate_Interface
      *
      * Returns true if and only if $value contains only hexadecimal digit characters
      *
      * @param  string $value
      * @return boolean
      */
     public function isValid($value)
     {
         if (!is_string($value) && !is_int($value)) {
             $this->_error(self::INVALID);
             return false;
         }
 
         $this->_setValue($value);
         if (!ctype_xdigit((string) $value)) {
             $this->_error(self::NOT_HEX);
             return false;
         }
 
         return true;
     }
 
 }