Online PHP editor | refs for Vdi24

<?php $time[1] = "2017-08-28 18:30:00"; $time[2] = "2017-08-28 14:00:00"; $time[3] = "2017-08-28 13:00:00"; $time[4] = "2017-08-28 12:45:00"; $time[5] = "2017-08-28 12:30:00"; $time[6] = "2017-08-28 12:00:00"; for ($i = 1; $i <= count($time) - 1; $i++) { $hourdiff = round((strtotime($time[$i + 1]) - strtotime($time[$i]))/3600, 1); echo "The difference is: $hourdiff" . PHP_EOL; }