3v4l.org

run code in 300+ PHP versions simultaneously
<?php function getTimeLeft($start, $minutes) { $endTime = strtotime($start.' + '.$minutes." minutes"); return $endTime - strtotime($start); } echo getTimeLeft('2015-09-06 21:00:39', '180');
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
10800

preferences:
267.98 ms | 404 KiB | 369 Q