public function uc() {

        if (isset($_POST['dosubmit'])) {

            $data = isset($_POST['data']) ? $_POST['data'] : '';

            $data['ucuse'] = isset($_POST['ucuse']) && intval($_POST['ucuse']) ? intval($_POST['ucuse']) : 0;

            $filepath = CACHE_PATH.'configs'.DIRECTORY_SEPARATOR.'system.php';

            $config = include $filepath;

            $uc_config = '<?php '."\ndefine('UC_CONNECT', 'mysql');\n";

            foreach ($data as $k => $v) {

                $old[] = "'$k'=>'".(isset($config[$k]) ? $config[$k] : $v)."',";

                $new[] = "'$k'=>'$v',";

                $uc_config .= "define('".strtoupper($k)."', '$v');\n";

            }

            $html = file_get_contents($filepath);

            $html = str_replace($old, $new, $html);

            $uc_config_filepath = CACHE_PATH.'configs'.DIRECTORY_SEPARATOR.'uc_config.php';

            @file_put_contents($uc_config_filepath, $uc_config);

            @file_put_contents($filepath, $html);

            $this->db->insert(array('name'=>'ucenter', 'data'=>array2string($data)), 1,1);

            showmessage(L('operation_success'), HTTP_REFERER);

        }

        $data = array();

        $r = $this->db->get_one(array('name'=>'ucenter'));

        if ($r) {

            $data = string2array($r['data']);

        }

        include $this->admin_tpl('system_uc');

    }

    public function __construct() {

        if(!get_magic_quotes_gpc()) {

            $_POST = new_addslashes($_POST);

            $_GET = new_addslashes($_GET);

            $_REQUEST = new_addslashes($_REQUEST);

            $_COOKIE = new_addslashes($_COOKIE);

        }