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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_Serializer
  * @subpackage Adapter
  * @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_Serializer_Adapter_AdapterAbstract */
 // require_once 'Zend/Serializer/Adapter/AdapterAbstract.php';
 
 /**
  * @category   Zend
  * @package    Zend_Serializer
  * @subpackage Adapter
  * @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_Serializer_Adapter_Igbinary extends Zend_Serializer_Adapter_AdapterAbstract
 {
     /**
      * @var string Serialized null value
      */
     private static $_serializedNull = null;
 
     /**
      * Constructor
      *
      * @param  array|Zend_Config $opts
      * @return void
      * @throws Zend_Serializer_Exception If igbinary extension is not present
      */
     public function __construct($opts = array())
     {
         if (!extension_loaded('igbinary')) {
             // require_once 'Zend/Serializer/Exception.php';
             throw new Zend_Serializer_Exception('PHP extension "igbinary" is required for this adapter');
         }
 
         parent::__construct($opts);
 
         if (self::$_serializedNull === null) {
             self::$_serializedNull = igbinary_serialize(null);
         }
     }
 
     /**
      * Serialize PHP value to igbinary
      *
      * @param  mixed $value
      * @param  array $opts
      * @return string
      * @throws Zend_Serializer_Exception on igbinary error
      */
     public function serialize($value, array $opts = array())
     {
         $ret = igbinary_serialize($value);
         if ($ret === false) {
             $lastErr = error_get_last();
             // require_once 'Zend/Serializer/Exception.php';
             throw new Zend_Serializer_Exception($lastErr['message']);
         }
         return $ret;
     }
 
     /**
      * Deserialize igbinary string to PHP value
      *
      * @param  string|binary $serialized
      * @param  array $opts
      * @return mixed
      * @throws Zend_Serializer_Exception on igbinary error
      */
     public function unserialize($serialized, array $opts = array())
     {
         $ret = igbinary_unserialize($serialized);
         if ($ret === null && $serialized !== self::$_serializedNull) {
             $lastErr = error_get_last();
             // require_once 'Zend/Serializer/Exception.php';
             throw new Zend_Serializer_Exception($lastErr['message']);
         }
         return $ret;
     }
 }