title: PHP How do I calculate relative time?
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/2690504/php-producing-relative-date-time-from-timestamps">PHP: producing relative date/time from timestamps</a>  </p>
  </blockquote>
  
  
  
  <p>Given a specific DateTime value, how do I display relative time, like</p>
  
  <ul>
  <li>35 minutes ago  </li>
  <li>2 hours ago </li>
  <li>3 days ago</li>
  <li>1 month ago</li>
  </ul>
  
  <p>etc, etc...?</p>
  
  <pre><code>mysql_query("UPDATE users SET lastlogin = ".time()." WHERE id = ".$userID); 
  </code></pre>