3v4l.org

run code in 300+ PHP versions simultaneously
<?php $start_hour = "08:00"; $different_hour = 1; echo $newTime = date("H:i", strtotime("+{$different_hour}hour ".$start_hour));
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
09:00
preferences:
145.53 ms | 407 KiB | 5 Q