title: How to get timestamp in ISO 8601 format with timezone in php
body: <p>Based on the <a href="http://dev.wix.com/docs/display/DRAF/Working+with+the+Wix+RESTful+API" rel="noreferrer">wix documentation</a>, <strong>2014-04-16T11:16:27.930Z</strong> is a timestamp in <strong>ISO 8601</strong> format with a timezone.
  A quick research reveals that the timestamp in <strong>ISO 8601</strong> displays the timezone with +time_interval (for instance +00:00)</p>
  
  <p>I tried date('c') which displays: 2014-04-16T06:23:31+00:00</p>
  
  <p>Could anyone tell me how to display timestamp in <strong>2014-04-16T11:16:27.930Z</strong> rather than <strong>2014-04-16T06:23:31+00:00</strong></p>