[Lynne]

Have you tried passing the variable to the function.

PHP Code:

private function fetch_lastids($a_var)
    {
        $lastx = $this->registry->db->query_first("
        SELECT COUNT(`threadid`) AS `lastx`
        FROM " . TABLE_PREFIX . "thread AS thread
        WHERE thread.forumid IN (0,". $a_var . ")
        AND thread.visible = 1
        ");
        $this->threadscount = $lastx['lastx'];
    }

..... fetch_lastids($Zforum)....