3v4l.org

run code in 300+ PHP versions simultaneously
<?php enum Foo { case 1; case 2; } var_dump(serialize(Foo::Bar));

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)
8.4.100.0180.00418.63

preferences:
137.91 ms | 993 KiB | 7 Q