title: Calculate number of hours , minutes and seconds between two dates in laravel
body: <p>Suppose we have to DateTime formatted date like this :</p>
  
  <pre><code>$started_at = '2016-07-05 12:29:16';
  $ended_at = '2016-07-06 13:30:10';
  </code></pre>
  
  <p>Now I want to calculate number of hours , minutes and seconds of them like this :</p>
  
  <pre><code>15 hours and 50 minutes and 15 seconds
  </code></pre>
  
  <p>How Can I do that in simplest way in laravel and using <a href="http://carbon.nesbot.com/docs/" rel="noreferrer">Carbon</a>.</p>