3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x = 5; echo $x; echo "\n"; echo $x++ + $x++; echo "\n"; echo $x; echo "\n"; echo $x---$x--; echo "\n"; echo $x;
based on pWBSA
Output for 4.3.0 - 7.1.0
5 11 7 1 5