(PECL pecl_http:0.10.0-1.5.5)
HttpRequest::getResponseData — Get response data
* Get all response data after the request has been sent.
If redirects were allowed and several responses were received, the data references the last received response.
Returns an associative array with the key "headers" containing an associative array holding all response headers, as well as the key "body" containing a string with the response body.