3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo strtotime("+12 hours");
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.6, 7.1.8 - 7.1.33, 7.2.0 - 7.2.22, 7.2.25 - 7.2.33, 7.3.0 - 7.3.8, 7.3.11 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
1451952643
Output for 7.1.7, 7.2.23 - 7.2.24, 7.3.9 - 7.3.10
1451952644

preferences:
223.24 ms | 402 KiB | 330 Q