Elgg\Http\ResponseFactory::redirect PHP Метод

    public function redirect($forward_url = REFERRER, $status_code = ELGG_HTTP_FOUND)
    {
        if ($forward_url === REFERRER) {
            $forward_url = $this->request->headers->get('Referer');
        }
        $forward_url = elgg_normalize_url($forward_url);
        // allow plugins to rewrite redirection URL
        $current_page = current_page_url();
        $params = ['current_url' => $current_page, 'forward_url' => $forward_url];
        $forward_reason = (string) $status_code;
        $forward_url = $this->hooks->trigger('forward', $forward_reason, $params, $forward_url);
        if ($this->response_sent) {
            // Response was sent from a forward hook
            // Clearing handlers to void infinite loops
            return $this->response_sent;
        }
        if ($forward_url === REFERRER) {
            $forward_url = $this->request->headers->get('Referer');
        }
        if (!is_string($forward_url)) {
            throw new InvalidParameterException("'forward', '{$forward_reason}' hook must return a valid redirection URL");
        }
        $forward_url = elgg_normalize_url($forward_url);
        switch ($status_code) {
            case 'system':
            case 'csrf':
                $status_code = ELGG_HTTP_OK;
                break;
            case 'admin':
            case 'login':
            case 'member':
            case 'walled_garden':
            default:
                $status_code = (int) $status_code;
                if (!$status_code || $status_code < 100 || $status_code > 599) {
                    $status_code = ELGG_HTTP_SEE_OTHER;
                }
                break;
        }
        if ($this->isXhr()) {
            if ($status_code < 100 || $status_code >= 300 && $status_code <= 399 || $status_code > 599) {
                // We only want to preserve OK and error codes
                // Redirect responses should be converted to OK responses as this is an XHR request
                $status_code = ELGG_HTTP_OK;
            }
            $output = ob_get_clean();
            if (!$this->isAction() && !$this->ajax->isAjax2Request()) {
                // legacy ajax calls are always OK
                // actions are wrapped by ResponseFactory::respond()
                $status_code = ELGG_HTTP_OK;
                $output = $this->wrapLegacyAjaxResponse($output, $forward_url);
            }
            $response = new OkResponse($output, $status_code, $forward_url);
            $headers = $response->getHeaders();
            $headers['Content-Type'] = 'application/json; charset=UTF-8';
            $response->setHeaders($headers);
            return $this->respond($response);
        }
        if ($this->isAction()) {
            // actions should always redirect on non xhr-calls
            if (!is_int($status_code) || $status_code < 300 || $status_code > 399) {
                $status_code = ELGG_HTTP_SEE_OTHER;
            }
        }
        $response = new OkResponse('', $status_code, $forward_url);
        if ($response->isRedirection()) {
            return $this->send($this->prepareRedirectResponse($forward_url, $status_code));
        }
        return $this->respond($response);
    }