run code in 300+ PHP versions simultaneously
<?php interface I { public function phpyh(string $x): iterable; } abstract class A implements I { abstract public function phpyh(int|string $x): array|\Generator; } interface I2 { public function phpyh(float $x, string $y): array; } final class B extends A implements I, I2 { public function phpyh(int|string|float $x, string $y = 'С 8 марта!'): array { return []; } } new B();

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)

30.05 ms | 402 KiB | 5 Q