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<?php class User { public $address; } class Address { public $street; } function old($key, $default) { var_dump($default); } $address = new Address(); $address->street = 'Street'; $user = new User(); $user->address = $address; old('address', $user->address ?? '');
Output for git.master, git.master_jit, rfc.property-hooks
object(Address)#1 (1) { ["street"]=> string(6) "Street" }

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