3v4l.org

run code in 300+ PHP versions simultaneously
<?php // Everything you enter here will be executed by our servers. Try it! system('help'); //echo date('Y-m-d h:m:i', strtotime(strtotime('2013-31-08 00:00:03') . ' + 1 MONTH'));
Output for 7.2.29 - 7.2.33, 7.3.16 - 7.3.33, 7.4.3 - 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
Warning: system(): Unable to fork [help] in /in/ItSte on line 3
Output for 4.3.0, 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0, 7.3.12, 7.4.0
Output for 4.3.1 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.44
sh: 1: help: not found
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/ItSte on line 4
Process exited with code 255.

preferences:
224.4 ms | 401 KiB | 308 Q