$query = $db->query("SELECT * FROM ".TABLE_PREFIX."forums f WHERE 1=1 $forumlist");
$comma = " - ";
while($forum = $db->fetch_array($query))
{
$title .= $comma.$forum['name'];
$forumcache[$forum['fid']] = $forum;
$comma = ", ";
Example:
/rss.php?..$comma=[SQL]