title: How to format an UTC date to use the Z (Zulu) zone designator in php?
body: <p>I need to display and handle UTC dates in the following format:</p>
  
  <blockquote>
    <p>2013-06-28T22:15:00Z</p>
  </blockquote>
  
  <p>As this format is part of the ISO8601 standard I have no trouble creating DateTime objects from strings like the one above. However I can't find a clean way (meaning no string manipulations like substr and replace, etc.) to present my DateTime object in the desired format. I tried to tweak the server and php datetime settings, with little success. I always get:</p>
  
  <pre><code>$date-&gt;format(DateTime::ISO8601); // gives 2013-06-28T22:15:00+00:00
  </code></pre>
  
  <p>Is there any date format or configuration setting that will give me the desired string? Or I'll have to append the 'Z' manually to a custom time format?</p>