مشكل بسيط في هاك اخر مواضيعي

global $db, $vbulletin; 
 
if($vbulletin->options['fav_order']==1){ 
$order="order by views DESC"; 
}elseif ($vbulletin->options['fav_order']==2){ 
$order="order by replycount DESC"; 
}elseif($vbulletin->options['fav_order']==3){ 
$order="order by rand()"; 
}elseif($vbulletin->options['fav_order']==4){ 
$order="order by dateline"; 
}elseif($vbulletin->options['fav_order']==5){ 
$order="order by dateline DESC"; 
}elseif($vbulletin->options['fav_order']==6){ 
$order="order by lastpost DESC"; 
} 
 
$mylimit = $vbulletin->options['num_favthread']; 
$mynotin = $vbulletin->options['fav_not_forumid']; 
 
$favthreads = $db->query_read(" 
     SELECT threadid, title, forumid 
     FROM " . TABLE_PREFIX . "thread 
     WHERE postuserid = '$post[userid]' AND forumid NOT IN($mynotin) 
     $order 
     LIMIT $mylimit 
     "); 
 
while ($favthread = $db->fetch_array($favthreads)) 
{ 
$favo.="0 <a href='showthread.php?t=$favthread[threadid]'>$favthread[title]</a><br>"; 
}

<img src="images/buttons/fav.gif" border="0" />