3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public function __construct( public readonly string $foo, public readonly int $bar, public readonly array $baz, ) {} } var_dump(new Foo('foo', 42, []));
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
object(Foo)#1 (3) { ["foo"]=> string(3) "foo" ["bar"]=> int(42) ["baz"]=> array(0) { } }
preferences:
56.07 ms | 406 KiB | 5 Q