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<?php class X { public $name; function __invoke() {} } class Wrapper { public $x; } $wrapper = new Wrapper; $wrapper->x = new X; $wrapper->x->name = 'THENAME'; $wrapper2 = new Wrapper; $wrapper2->x = $wrapper->x; var_dump(unserialize(serialize($wrapper))); var_dump(unserialize(serialize($wrapper2)));
Output for git.master, git.master_jit, rfc.property-hooks
object(Wrapper)#4 (1) { ["x"]=> object(X)#5 (1) { ["name"]=> string(7) "THENAME" } } object(Wrapper)#4 (1) { ["x"]=> object(X)#5 (1) { ["name"]=> string(7) "THENAME" } }

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