3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface I { public function go(iterable $x): void; } final class Test implements I { public function go(iterable|Generator $x): void { echo 'It\'s work!'; } } (new Test())->go([]); echo "\n"; (new Test())->go((static fn() => yield 1)());
Output for 8.0.0, 8.1.24 - 8.1.33, 8.2.11 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
It's work! It's work!

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118.25 ms | 406 KiB | 5 Q