yii\httpclient\Request::getOptions PHP Method

    public function getOptions()
    {
        return $this->_options;
    }

 /**
  * Prepare request for execution, creating cURL resource for it.
  * @param Request $request request instance.
  * @return array cURL options.
  */
 private function prepare($request)
 {
     $request->prepare();
     $curlOptions = $this->composeCurlOptions($request->getOptions());
     $method = strtoupper($request->getMethod());
     switch ($method) {
         case 'GET':
             break;
         case 'POST':
             $curlOptions[CURLOPT_POST] = true;
             break;
         default:
             $curlOptions[CURLOPT_CUSTOMREQUEST] = $method;
     }
     $content = $request->getContent();
     if ($content !== null) {
         $curlOptions[CURLOPT_POSTFIELDS] = $content;
     }
     $curlOptions[CURLOPT_RETURNTRANSFER] = true;
     $curlOptions[CURLOPT_URL] = $request->getUrl();
     $curlOptions[CURLOPT_HTTPHEADER] = $request->composeHeaderLines($request);
     return $curlOptions;
 }