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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_Alnum extends Zend_Validate_Abstract
 {
     const INVALID      = 'alnumInvalid';
     const NOT_ALNUM    = 'notAlnum';
     const STRING_EMPTY = 'alnumStringEmpty';
 
     /**
      * Whether to allow white space characters; off by default
      *
      * @var boolean
      * @deprecated
      */
     public $allowWhiteSpace;
 
     /**
      * Alphanumeric filter used for validation
      *
      * @var Zend_Filter_Alnum
      */
     protected static $_filter = null;
 
     /**
      * Validation failure message template definitions
      *
      * @var array
      */
     protected $_messageTemplates = array(
         self::INVALID      => "Invalid type given. String, integer or float expected",
         self::NOT_ALNUM    => "'%value%' contains characters which are non alphabetic and no digits",
         self::STRING_EMPTY => "'%value%' is an empty string",
     );
 
     /**
      * Sets default option values for this instance
      *
      * @param boolean|Zend_Config $allowWhiteSpace
      */
     public function __construct($allowWhiteSpace = false)
     {
         if ($allowWhiteSpace instanceof Zend_Config) {
             $allowWhiteSpace = $allowWhiteSpace->toArray();
         }
 
         if (is_array($allowWhiteSpace)) {
             if (array_key_exists('allowWhiteSpace', $allowWhiteSpace)) {
                 $allowWhiteSpace = $allowWhiteSpace['allowWhiteSpace'];
             } else {
                 $allowWhiteSpace = false;
             }
         }
 
         $this->allowWhiteSpace = (boolean) $allowWhiteSpace;
     }
 
     /**
      * Returns the allowWhiteSpace option
      *
      * @return boolean
      */
     public function getAllowWhiteSpace()
     {
         return $this->allowWhiteSpace;
     }
 
     /**
      * Sets the allowWhiteSpace option
      *
      * @param boolean $allowWhiteSpace
      * @return Zend_Filter_Alnum Provides a fluent interface
      */
     public function setAllowWhiteSpace($allowWhiteSpace)
     {
         $this->allowWhiteSpace = (boolean) $allowWhiteSpace;
         return $this;
     }
 
     /**
      * Defined by Zend_Validate_Interface
      *
      * Returns true if and only if $value contains only alphabetic and digit characters
      *
      * @param  string $value
      * @return boolean
      */
     public function isValid($value)
     {
         if (!is_string($value) && !is_int($value) && !is_float($value)) {
             $this->_error(self::INVALID);
             return false;
         }
 
         $this->_setValue($value);
 
         if ('' === $value) {
             $this->_error(self::STRING_EMPTY);
             return false;
         }
 
         if (null === self::$_filter) {
             /**
              * @see Zend_Filter_Alnum
              */
             // require_once 'Zend/Filter/Alnum.php';
             self::$_filter = new Zend_Filter_Alnum();
         }
 
         self::$_filter->allowWhiteSpace = $this->allowWhiteSpace;
 
         if ($value != self::$_filter->filter($value)) {
             $this->_error(self::NOT_ALNUM);
             return false;
         }
 
         return true;
     }
 
 }