3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = $y = 1; var_dump( (!$x === $y) === (!($x === $y)) );
based on Te2Za
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
bool(true)
Output for hhvm-3.10.0

Process exited with code 153.