3v4l.org

run code in 300+ PHP versions simultaneously
<?php $now = strtotime('6/17/2016 20:10 CEST'); echo date("m/d/y", strtotime("+1.5 years", $now)), PHP_EOL; echo date("m/d/y", strtotime("+1.0 years", $now));
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
06/17/21 06/17/16

preferences:
75.3 ms | 2090 KiB | 4 Q