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   1 # http\Client http\Client::enqueue(http\Client\Request $request[, callable $cb])
   2
   3 Add another http\Client\Request to the request queue.
   4 If the optional callback $cb returns true, the request will be automatically dequeued.
   5
   6 See http\Client::dequeue() and http\Client::send().
   7
   8 ## Params:
   9
  10 * http\Client\Request $request
  11   The request to enqueue.
  12 * Optional callable $cb
  13   A callback to automatically call when the request has finished.
  14
  15 ## Returns:
  16
  17 * http\Client, self.
  18
  19 ## Throws:
  20
  21 * http\Exception.
  22
  23 ## Example:
  24
  25     (new http\Client)->enqueue(new http\Client\Request("GET", "http://php.net"),
  26         function(http\Client\Response $res) {
  27             printf("%s returned %d\n", $res->getTransferInfo("effective_url"), $res->getResponseCode());
  28             return true; // dequeue
  29     })->send();
  30
  31 Yields:
  32
  33     http://php.net/ returned 200