3v4l.org

run code in 300+ PHP versions simultaneously
<?php print_r(time()); define('FOO', time()); class BAR{ public static $BAZ = FOO; } sleep(5); print_r(BAR::$BAZ);
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.6
1357547512
Process exited with code 137.
preferences:
155.15 ms | 403 KiB | 163 Q