run code in 200+ php & hhvm versions
Bugs & Features
<?php abstract class a { public static function my() { echo 'a'; } public function hi() { $class = get_called_class(); protected static $my = 'my'; $class::$my(); } } class b extends a { public static function my() { echo 'b'; } } $b = new b(); $b->hi();

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)