3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(null < 0); var_dump(null > 0);
based on Tfaiv
Output for 4.3.0 - 7.1.7, 7.2.0
bool(false) bool(false)
Output for 7.1.10

Process exited with code 137.