Online PHP editor | output for FI63K

<?php $time = "18 hours 13 minutes"; $time2 = "47 minutes"; $time3 = "1 hour"; $time4 = "1 hour"; $time5 = "1 hour"; $time6 = ""; $time7 = ""; $start = new DateTime(); $end = clone($start); if (!empty($time)) $end->modify("+$time"); if (!empty($time2)) $end->modify("+$time2"); if (!empty($time3)) $end->modify("+$time3"); if (!empty($time4)) $end->modify("+$time4"); if (!empty($time5)) $end->modify("+$time5"); if (!empty($time6)) $end->modify("+$time6"); if (!empty($time7)) $end->modify("+$time7"); $total = $end->diff($start); echo $total->format('%h hours %i minutes');