gistfile1.aw

<?php

$fields = array(
  "groups" => array("52d1c068-f611-11e0-a44b-12313d04fc0f"),
  "title" => "Test Event Creation",
  "description" => "Description test goes here...",
  "date_time" => array(
    "start" => "2012-02-15T08:05:00",
    "end"   => "2012-02-15T09:05:00",
  ),
  "published" => TRUE
);

echo http_build_query($fields);