error with bbcode for hiding a content?

<?php
/*-------------------------------------------------------+
| PHPFusion Content Management System
| Copyright (C) 2002 - 2008 Nick Jones
| http://www.php-fusion.co.uk/
+--------------------------------------------------------+
| Filename: gizli_bbcode_include.php
| Author: burakkk
| Webstie: www.phpfusion-tr.com
| Edit v7 :DjGaripSofi
| Webstie:www.radyogulistan.net
|Codes edit by ercutombalak
|Website:www.ercutombalak.com
+--------------------------------------------------------+
| This program is released as free software under the
| Affero GPL license. You can redistribute it and/or
| modify it under the terms of this license which you
| can read by viewing the included agpl.txt or online
| at www.gnu.org/licenses/agpl.html. Removal of this
| copyright header is strictly prohibited without
| written permission from the original author(s).
+--------------------------------------------------------*/
if (!defined("IN_FUSION")) { die("Access Denied"); }

if (iMEMBER) {
global $userdata;
$hidequery = dbquery("SELECT post_author FROM ".DB_POSTS." WHERE thread_id = '".$_GET['thread_id']."' AND post_author = '".$userdata['user_id']."'");
$userposted = dbarraynum($hidequery);
if(empty($userposted))
$text = preg_replace('#\[gizli\](.*?)\[/gizli\]#si', ' <img src=\'../images/locked.gif\' alt=\'Gizli &#304;çerik!\'><br><div class=\'quote\' style=\'white-space:nowrap;overflow:auto\'><code style=\'white-space:nowrap\'><b>&#304;çerik Gizlemi&#351;tir,&#304;çeri&#287;i Görebilmek &#304;çin Konuya Cevap Yazmal&#305;s&#305;n&#305;z...<br>(Saçmasapan &#350;eyler Yazanlar Siteden 2 Gün banlanacakt&#305;r...<br>Konuya Yorumlar&#305;n&#305;z&#305; Yada Te&#351;ekkürlerinizi Yazabilirsiniz...)</code></b></div>', $text);
else
$text = preg_replace('#\[gizli\](.*?)\[/gizli\]#si', ' <img src=\'../images/unlocked.gif\' alt=\'Gizli &#304;çerik Aç&#305;ld&#305;.\'><br><div class=\'quote\' style=\'white-space:nowrap;overflow:auto\'><code style=\'white-space:nowrap\'><font color=red>Mesaj &#304;çeri&#287;i;</font><br>\1</code></div>', $text);
}

if (!iMEMBER) {

if(empty($userposted))
$text = preg_replace('#\[gizli\](.*?)\[/gizli\]#si', ' <br><div class=\'quote\' style=\'white-space:nowrap;overflow:auto\'><code style=\'white-space:nowrap\'><b>&#304;çerik Gizlemi&#351;tir,&#304;çeri&#287;i Görebilmek &#304;çin Konuya Cevap Yazmal&#305;s&#305;n&#305;z...<br>(Saçmasapan &#350;eyler Yazanlar Siteden 2 Gün banlanacakt&#305;r...<br>Konuya Yorumlar&#305;n&#305;z&#305; Yada Te&#351;ekkürlerinizi Yazabilirsiniz...)</code></b></div>', $text);
}
?>