3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(is_null(0));
Output for 4.3.0 - 5.5.18, 5.5.20 - 5.6.29, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
bool(false)
Output for 5.5.19

Process exited with code 137.