3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $error = null; if (!($error == NULL)) { echo 'not null'; } else {echo 'It is null';} ?>
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
It is null
Output for hhvm-3.10.0

Process exited with code 153.