(PECL pecl_http >= 1.0.0)
HttpRequest::resetCookies — Reset cookies
Reset all automatically received/sent cookies.
Note: Note that custom set cookies are not affected.
whether only session cookies should be reset (needs libcurl >= v7.15.4, else libcurl >= v7.14.1)
如果成功则返回 TRUE,失败则返回 FALSE。