title: PHP Fatal error: Call to a member function diff() on boolean
body: <p>Crashes on:</p>
  
  <pre><code>$Time = new DateTime('now', new DateTimeZone('UTC'));
  $DBTime = DateTime::createFromFormat('Y-m-d H:i:s.u', 2000-01-01 00:00:00, new DateTimeZone('UTC'));
  $Interval = $DBTime -&gt;diff($Time);
  </code></pre>
  
  <blockquote>
    <p>Call to a member function diff() on boolean</p>
  </blockquote>
  
  <p>Wrong format?</p>