yii\filters\PageCache::cacheResponse PHP Метод

    public function cacheResponse()
    {
        $this->view->endCache();
        $response = Yii::$app->getResponse();
        $data = ['format' => $response->format, 'version' => $response->version, 'statusCode' => $response->statusCode, 'statusText' => $response->statusText];
        if (!empty($this->cacheHeaders)) {
            $headers = $response->getHeaders()->toArray();
            if (is_array($this->cacheHeaders)) {
                $filtered = [];
                foreach ($this->cacheHeaders as $name) {
                    $name = strtolower($name);
                    if (isset($headers[$name])) {
                        $filtered[$name] = $headers[$name];
                    }
                }
                $headers = $filtered;
            }
            $data['headers'] = $headers;
        }
        if (!empty($this->cacheCookies)) {
            $cookies = $response->getCookies()->toArray();
            if (is_array($this->cacheCookies)) {
                $filtered = [];
                foreach ($this->cacheCookies as $name) {
                    if (isset($cookies[$name])) {
                        $filtered[$name] = $cookies[$name];
                    }
                }
                $cookies = $filtered;
            }
            $data['cookies'] = $cookies;
        }
        $this->cache->set($this->calculateCacheKey(), $data, $this->duration, $this->dependency);
        echo ob_get_clean();
    }