验证码的代码

<?php
/*
 * FCKeditor - The text editor for Internet -http://www.jiashiye.com
 * Copyright (C) 2003-2009 Frederico Caldeira Knabben
 *
 * == BEGIN LICENSE ==
 *
 * Licensed under the terms of any of the following licenses at your
 * choice:
 *
 *  - GNU General Public License Version 2 or later (the "GPL")
 *     *http://www.jiashiye.com
 *  - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
 *    *http://www.jiashiye.com
 *  - Mozilla Public License Version 1.1 or later (the "MPL")
 *    http://www.jiashiye.com *
 * == END LICENSE ==
 *
 * This is the integration file for PHP (All versions).
 *
 * It loads the correct integration file based on the PHP version (avoiding
 * strict error messages with PHP 5).
 */
if ( !function_exists('version_compare') || version_compare( phpversion(), '5', '<' ) )
 include_once( 'fckeditor_php4.php' ) ;
else
 include_once( 'fckeditor_php5.php' ) ;
?>