title: Calculate difference beween two dates in hours , minutes and seconds
body: <p>I have a date with this format</p>
  
  <pre><code>Fri Feb 07 17:22:23 +0000 2014
  </code></pre>
  
  <p>How can calculate difference with server current time in php? </p>
  
  <p>I try </p>
  
  <pre><code>date('D M d H:i:s Y');
  date_diff
  </code></pre>
  
  <p>but no luck</p>