3v4l.org

run code in 300+ PHP versions simultaneously
<?php readonly class Foo { public function __construct( public int $value, ) {} } $foo = new Foo(42); var_dump($foo); $ao = new ArrayObject($foo); $ao['value'] = 666; var_dump($foo);
Output for 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
object(Foo)#1 (1) { ["value"]=> int(42) } object(Foo)#1 (1) { ["value"]=> int(666) }

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