ManaPHP\Http\Request::getHeader PHP Метод

    public function getHeader($name)
    {
        $name = strtoupper(str_replace('-', '_', $name));
        if (isset($_SERVER[$name])) {
            return $_SERVER[$name];
        }
        $name = 'HTTP_' . $name;
        if (isset($_SERVER[$name])) {
            return $_SERVER[$name];
        }
        return null;
    }