interface/modules/zend_modules/library/Zend/Serializer/Adapter/IgBinary.php

   1 <?php
   2 /**
   3  * Zend Framework (http://framework.zend.com/)
   4  *
   5  * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6  * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
   7  * @license   http://framework.zend.com/license/new-bsd New BSD License
   8  */
   9
  10 namespace Zend\Serializer\Adapter;
  11
  12 use Zend\Serializer\Exception;
  13 use Zend\Stdlib\ErrorHandler;
  14
  15 class IgBinary extends AbstractAdapter
  16 {
  17     /**
  18      * @var string Serialized null value
  19      */
  20     private static $serializedNull = null;
  21
  22     /**
  23      * Constructor
  24      *
  25      * @throws Exception\ExtensionNotLoadedException If igbinary extension is not present
  26      */
  27     public function __construct($options = null)
  28     {
  29         if (!extension_loaded('igbinary')) {
  30             throw new Exception\ExtensionNotLoadedException(
  31                 'PHP extension "igbinary" is required for this adapter'
  32             );
  33         }
  34
  35         if (static::$serializedNull === null) {
  36             static::$serializedNull = igbinary_serialize(null);
  37         }
  38
  39         parent::__construct($options);
  40     }
  41
  42     /**
  43      * Serialize PHP value to igbinary
  44      *
  45      * @param  mixed $value
  46      * @return string
  47      * @throws Exception\RuntimeException on igbinary error
  48      */
  49     public function serialize($value)
  50     {
  51         ErrorHandler::start();
  52         $ret = igbinary_serialize($value);
  53         $err = ErrorHandler::stop();
  54
  55         if ($ret === false) {
  56             throw new Exception\RuntimeException('Serialization failed', 0, $err);
  57         }
  58
  59         return $ret;
  60     }
  61
  62     /**
  63      * Deserialize igbinary string to PHP value
  64      *
  65      * @param  string $serialized
  66      * @return mixed
  67      * @throws Exception\RuntimeException on igbinary error
  68      */
  69     public function unserialize($serialized)
  70     {
  71         if ($serialized === static::$serializedNull) {
  72             return;
  73         }
  74
  75         ErrorHandler::start();
  76         $ret = igbinary_unserialize($serialized);
  77         $err = ErrorHandler::stop();
  78
  79         if ($ret === null) {
  80             throw new Exception\RuntimeException('Unserialization failed', 0, $err);
  81         }
  82
  83         return $ret;
  84     }
  85 }