run code in 200+ php & hhvm versions
Bugs & Features
<?php class foo { function getData() { return array('hello' => 'world'); } function test() { // return '(($__data = $this->getData(), $__data["a"]["b"]) ? true : false)'; return (($a = $this->getData(), $a['hello']) ? TRUE : FALSE); } } $foo = new foo(); var_dump($foo->test());

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)