Horde_Http_Request_Base::send PHP Method

    public abstract function send();

 /**
  * Sends an HTTP request.
  *
  * @param string $method         HTTP request method (GET, PUT, etc.)
  * @param string|Horde_Url $uri  URI to request, if different from
  *                               $this->uri
  * @param string|array $data     Request data. Array of form data that will
  *                               be encoded automatically, or a raw string.
  * @param array $headers         Any headers specific to this request. They
  *                               will be combined with $this->_headers, and
  *                               override headers of the same name for this
  *                               request only.
  *
  * @throws Horde_Http_Exception
  * @return Horde_Http_Response_Base
  */
 public function request($method, $uri = null, $data = null, $headers = array())
 {
     if ($method !== null) {
         $this->request->method = $method;
     }
     if ($uri !== null) {
         $this->request->uri = $uri;
     }
     if ($data !== null) {
         $this->request->data = $data;
     }
     if (count($headers)) {
         $this->request->setHeaders($headers);
     }
     $this->_lastRequest = $this->_request;
     $this->_lastResponse = $this->_request->send();
     return $this->_lastResponse;
 }