Purl\Url::getUrl PHP Метод

    public function getUrl()
    {
        $this->initialize();
        $parts = array_map(function ($value) {
            return (string) $value;
        }, $this->data);
        if (!$this->isAbsolute()) {
            return self::httpBuildRelativeUrl($parts);
        }
        return self::httpBuildUrl($parts);
    }

 private function multisite_url($url)
 {
     $stage_url = new Url($url);
     $current_site = new Url(get_home_url(get_current_blog_id()));
     $current_site->host = str_replace($current_site->registerableDomain, $stage_url->registerableDomain, $current_site->host);
     return rtrim($current_site->getUrl(), '/') . $_SERVER['REQUEST_URI'];
 }