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 license@zend.com so we can send you a copy immediately.

    14  *

    15  * @category   Zend

    16  * @package    Zend_Serializer

    17  * @subpackage Adapter

    18  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    19  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    20  * @version    $Id: Igbinary.php 20574 2010-01-24 17:39:14Z mabe $

    21  */

    22 

    23 /** @see Zend_Serializer_Adapter_AdapterAbstract */

    24 require_once 'Zend/Serializer/Adapter/AdapterAbstract.php';

    25 

    26 /**

    27  * @category   Zend

    28  * @package    Zend_Serializer

    29  * @subpackage Adapter

    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_Serializer_Adapter_Igbinary extends Zend_Serializer_Adapter_AdapterAbstract

    34 {

    35     /**

    36      * @var string Serialized null value

    37      */

    38     private static $_serializedNull = null;

    39 

    40     /**

    41      * Constructor

    42      * 

    43      * @param  array|Zend_Config $opts 

    44      * @return void

    45      * @throws Zend_Serializer_Exception If igbinary extension is not present

    46      */

    47     public function __construct($opts = array()) 

    48     {

    49         if (!extension_loaded('igbinary')) {

    50             require_once 'Zend/Serializer/Exception.php';

    51             throw new Zend_Serializer_Exception('PHP extension "igbinary" is required for this adapter');

    52         }

    53 

    54         parent::__construct($opts);

    55 

    56         if (self::$_serializedNull === null) {

    57             self::$_serializedNull = igbinary_serialize(null);

    58         }

    59     }

    60 

    61     /**

    62      * Serialize PHP value to igbinary

    63      * 

    64      * @param  mixed $value 

    65      * @param  array $opts 

    66      * @return string

    67      * @throws Zend_Serializer_Exception on igbinary error

    68      */

    69     public function serialize($value, array $opts = array())

    70     {

    71         $ret = igbinary_serialize($value);

    72         if ($ret === false) {

    73             $lastErr = error_get_last();

    74             require_once 'Zend/Serializer/Exception.php';

    75             throw new Zend_Serializer_Exception($lastErr['message']);

    76         }

    77         return $ret;

    78     }

    79 

    80     /**

    81      * Deserialize igbinary string to PHP value

    82      * 

    83      * @param  string|binary $serialized 

    84      * @param  array $opts 

    85      * @return mixed

    86      * @throws Zend_Serializer_Exception on igbinary error

    87      */

    88     public function unserialize($serialized, array $opts = array())

    89     {

    90         $ret = igbinary_unserialize($serialized);

    91         if ($ret === null && $serialized !== self::$_serializedNull) {

    92             $lastErr = error_get_last();

    93             require_once 'Zend/Serializer/Exception.php';

    94             throw new Zend_Serializer_Exception($lastErr['message']);

    95         }

    96         return $ret;

    97     }

    98 }