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<?php class Foo { public function __construct( public readonly array $bar, ) {} } $ref = 42; $bar = [&$ref]; $foo = new Foo($bar); var_dump($foo); $ref = 43; var_dump($foo);
Output for git.master, git.master_jit
object(Foo)#1 (1) { ["bar"]=> array(1) { [0]=> &int(42) } } object(Foo)#1 (1) { ["bar"]=> array(1) { [0]=> &int(43) } }

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