3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = 10; while($x--> 0) echo "$x\n";
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
9 8 7 6 5 4 3 2 1 0