Db::parseOrder PHP Method

    protected function parseOrder($order)
    {
        if (is_array($order)) {
            $array = array();
            foreach ($order as $key => $val) {
                if (is_numeric($key)) {
                    $array[] = $this->addSpecialChar($val);
                } else {
                    $array[] = $this->addSpecialChar($key) . ' ' . $val;
                }
            }
            $order = implode(',', $array);
        }
        return !empty($order) ? ' ORDER BY ' . $order : '';
    }