3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = 'foo'; $c = static fn (array $bar): array => [$foo, $bar]; var_dump(($c)(['bar']));
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array(2) { [0]=> string(3) "foo" [1]=> array(1) { [0]=> string(3) "bar" } }
preferences:
58.61 ms | 406 KiB | 5 Q