ManaPHP\Http\Request::_getHelper PHP Метод

    protected function _getHelper($source, $name = null, $rule = null, $defaultValue = null)
    {
        if ($name === null) {
            $data = [];
            foreach ($source as $k => $_) {
                $data[$k] = $this->_getHelper($source, $k, $rule);
            }
            return $data;
        }
        return $this->filter->sanitize($name, $rule, isset($source[$name]) ? $source[$name] : $defaultValue);
    }