title: how to get user's random friend in facebook application?
body: <p>I have a friendlist that displays all of user's facebook friends. 
  What I actually want is to display only <strong>one</strong> friend at a time, selected randomly.
  is there any way to do so?</p>
  
  <pre><code>&lt;?  
      foreach ($friends as $friend) 
      {
           echo "&lt;img src='http://graph.facebook.com/" . $friend['id'] ."/picture'&gt;&lt;br&gt;";
      }
  ?&gt;
  </code></pre>