魔术方法__invoke()在尝试将对象作为函数使用时会被调用。 public function __invoke(RequestInterface $request, array $options) { if (isset($options['delay'])) { usleep($options['delay'] * 1000); } $easy = $this->factory->create($request, $options); curl_exec($easy->handle); $easy->errno = curl_errno($easy->handle); return CurlFactory::finish($this, $easy, $this->factory); }