Online PHP editor | refs for Fa1sE

<?php $startdate1 = "03:00"; $enddate1 = "08:00"; $startdate2 = "00:00"; $enddate2 = "06:00"; $startdate1 = date_create($startdate1); $enddate1 = date_create($enddate1); $startdate2 = date_create($startdate2); $enddate2 = date_create($enddate2); $startOverlap = max($startdate1,$startdate2); $endOverlap = min($enddate1,$enddate2); $diff = $startOverlap < $endOverlap ? $startOverlap->diff($endOverlap) : false ; echo $diff ? $diff->format('%h:%i:%s') : 'no overlap';