run code in 200+ php & hhvm versions
Bugs & Features
<?php $actions = array( '*' => 'multiply', '/' => 'divide' ); function dontSwitch($option) { call_user_func($actions[$option]); } multiply() { return 'fuuuuu'; } divide() { return 'dump'; } echo dontSwitch('*');

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).
Note: hhvm uses a JIT which only kicks in after a few runs. Since we run scripts only once, hhvm always runs slower.

VersionSystem time (s)User time (s)Memory (MiB)