function getOne($sql, $arrval = array()) {

        $sql = $this->dbFactory->sfChangeMySQL($sql);

        $sth = $this->conn->prepare($sql);
         if (PEAR::isError($sth)) {
             var_dump($sth);
             return;
        }
        $affected = $sth->execute($arrval);

        if (PEAR::isError($affected)) {
             var_dump($affected);
            //trigger_error($affected->getMessage(), E_USER_ERROR);
             return;
        }

        return $affected->fetchOne();
}

require_once HTML_PATH . 'handle_error.php';