App\Console\Commands\Site::validateHost PHP Méthode

    private function validateHost($host)
    {
        if (preg_match("/^([a-z\\d](-*[a-z\\d])*)(\\.([a-z\\d](-*[a-z\\d])*))*\$/i", $host) && preg_match("/^.{1,253}\$/", $host) && preg_match("/^[^\\.]{1,63}(\\.[^\\.]{1,63})*\$/", $host)) {
            return $host;
        } else {
            throw new InvalidArgumentException();
        }
    }