很棒的在线教学系统

								// $Id: Null.php,v 1.1.2.1 2008/10/03 07:09:49 nicolasconnault Exp $				/**				 * Null Serializer				 *				 * @category   HTML				 * @package    AJAX				 * @author     Joshua Eichorn 				 * @copyright  2005 Joshua Eichorn				 * @license    http://www.opensource.org/licenses/lgpl-license.php  LGPL				 * @version    Release: 0.5.6				 * @link       http://pear.php.net/package/PackageName				 */				class HTML_AJAX_Serializer_Null 				{				    				    function serialize($input) 				    {				        return $input;				    }								    function unserialize($input) 				    {				        return $input;				    }				}				/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */				?>