Time calculation between 2 dates

Perhaps not the most elegant - but it works.

PHP Code:

 
  $start = new DateTime("2017-03-09 09:26:00");
  $end = new DateTime("2017-03-11 09:25:00");
  $interval = $start->diff($end);
  $hrs = $interval->d * 24 + $interval->h;
  echo $hrs." hours ".$interval->format('%i')." minutes";