3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = 0; for ($count = 0; $count <= 5; $count ++) $x = $x * $x; echo $x;
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
0