3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public function baz(string $whiz): string { echo $whiz; return $whiz; } } class Bar extends Foo { public function baz(string $whiz, bool $whaz = FALSE): string { echo $whiz; return $whiz; } } $f = new Bar(); $f->baz('yes');
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
yes

preferences:
146.36 ms | 402 KiB | 123 Q