title: calculate number of days between 2 dates in php
body: <p>I need to calculate difference between 2 dates here is my dates </p>
  
  <pre><code>$start = strtotime('17/05/2016');
  $end = strtotime('12/05/2016');
  </code></pre>
  
  <p>I have tried </p>
  
  <pre><code>  echo $days_between = ceil(abs($end - $start) / 86400);
  </code></pre>
  
  <p>But it shows output as 17140</p>
  
  <p>Hep to find the number of days between 2 given dates </p>