GlobalAction::__isValidRequest PHP Method

    private function __isValidRequest($field, $array = 'post')
    {
        $field = is_array($field) ? $field : explode(',', $field);
        $array = $array == 'post' ? $_POST : $_GET;
        foreach ($field as $v) {
            $v = trim($v);
            if (!isset($array[$v]) || $array[$v] == '') {
                return false;
            }
        }
        return true;
    }