(PECL pecl_http >= 0.10.0)
HttpRequestPool::attach — Attach HttpRequest
Attach an HttpRequest object to this HttpRequestPool.
Set all options prior attaching!
an HttpRequest object not already attached to any HttpRequestPool object
成功时返回 TRUE, 或者在失败时返回 FALSE.
Throws HttpInvalidParamException, HttpRequestException, HttpRequestPoolException, HttpEncodingException.