3v4l.org

run code in 500+ 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
8.3.50.0080.01016.79
preferences:
40.01 ms | 489 KiB | 4 Q