run code in 300+ PHP versions simultaneously
<?php namespace Foo; const Bar = 'const'; class Bar { private const BAR = 'class'; public function show(): \Closure { return static function() { echo self::BAR; }; } } (new Bar)->show()();

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).

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

19.4 ms | 403 KiB | 5 Q