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   1  <?php
   2  /**
   3  * @package JPSpan
   4  * @subpackage Unserialzier
   5  * @version $Id: Unserializer.php,v 1.3 2004/11/17 20:40:05 harryf Exp $
   6  */
   7  //--------------------------------------------------------------------------------
   8  
   9  /**
  10  * Global array of known classes which may be unserialized.
  11  * Use JPSpan_Unserializer::register() to register new types
  12  * @see JPSpan_Unserializer::register
  13  * @package JPSpan
  14  * @subpackage Unserialzier
  15  */
  16  $GLOBALS['_JPSPAN_UNSERIALIZER_MAP'] = array();
  17  
  18  /**
  19  * Include the Script Server types for mapping JS <> PHP
  20  */
  21  require_once JPSPAN . 'Types.php';
  22  
  23  /**
  24  * Register the allowed unserialization objects
  25  * Function defined in Types script
  26  * @todo Change the name of this function
  27  */
  28  JPSpan_Register_Unserialization_Types();
  29  //--------------------------------------------------------------------------------
  30  
  31  /**
  32  * Handles unserialization on incoming request data
  33  * @package JPSpan
  34  * @subpackage Unserialzier
  35  * @access public
  36  */
  37  class JPSpan_Unserializer {
  38      /**
  39      * Unserialize a string into PHP data types. 
  40      * @param string data serialized with PHP's serialization protocol
  41      * @param string encoding (default = 'xml') - how the data is serialized
  42      * @return mixed PHP data
  43      * @access private
  44      * @static
  45      */
  46      function unserialize($data, $encoding = 'xml') {
  47          switch ( $encoding ) {
  48              case 'php':
  49                  require_once JPSPAN . 'Unserializer/PHP.php';
  50                  $U = & new JPSpan_Unserializer_PHP();
  51              break;
  52              case 'xml':
  53              default:
  54                  require_once JPSPAN . 'Unserializer/XML.php';
  55                  $U = & new JPSpan_Unserializer_XML();
  56              break;
  57          }
  58          return $U->unserialize($data);
  59      }
  60      
  61      /**
  62      * Register a known class for unserialization
  63      * Places a value in the global _JPSpan_UNSERIALIZER_MAP variable
  64      * @param string class name
  65      * @param string (optional) script include - your job to get path right!
  66      * @return void
  67      * @access public
  68      * @static
  69      */
  70      function addType($class, $file = NULL) {
  71          $GLOBALS['_JPSPAN_UNSERIALIZER_MAP'][strtolower($class)] = $file;
  72      }
  73      
  74  
  75  }
  76