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<?php class Foo { public function __construct( public readonly string $bar ){} } $foo = new Foo('bar'); var_dump($foo->bar); $arrayObject = new ArrayObject($foo); $arrayObject['bar'] = new \DateTimeImmutable("1986-08-20 midnight"); var_dump($foo->bar);
Output for git.master_jit, git.master, rfc.property-hooks
string(3) "bar" object(DateTimeImmutable)#3 (3) { ["date"]=> string(26) "1986-08-20 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }

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