NukeViet\Core\Request::parse_mode PHP Method

    private function parse_mode($mode)
    {
        if (empty($mode)) {
            return array($this->request_default_mode);
        }
        $mode = explode(',', $mode);
        $mode = array_map('trim', $mode);
        $mode = array_map('strtolower', $mode);
        $mode = array_intersect($this->allow_request_mods, $mode);
        if (empty($mode)) {
            return array($this->request_default_mode);
        }
        return array_values($mode);
    }