protected function getAssoc($handle)
    {
        $oldSession = session_id();
        session_commit();
        session_id($handle);
        session_start();
        $assoc = null;
        if(!empty($_SESSION['assoc'])) {
            $assoc = $_SESSION['assoc'];
        }
        session_commit();
        if($oldSession) {
            session_id($oldSession);
            session_start();
        }
        return $assoc;
    }