3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = 16; $y = 1; while ($y < $x) { $y = $y << 1; echo $y; }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
24816