Calculating hours and minutes between two times
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/534364/php-work-out-duration-between-two-times">PHP: Work out duration between two times</a>  </p>
</blockquote>



<p>If I got</p>

<pre><code>$time1 = '12:58';
$time2 = '15:00';
</code></pre>

<p>How can i calculate, so it outputs <code>02:02</code> from the above</p>
