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<?php class MyParent { protected $var = 0; } class Child extends MyParent { public function __construct() { $this->var = 1; } } class Abuser extends MyParent { public function get(MyParent $child) { return $child->var; } } $child = new Child(); $abuser = new Abuser(); var_dump($abuser->get($child)); var_dump($child); var_dump($abuser);
Output for git.master, git.master_jit, rfc.property-hooks
int(1) object(Child)#1 (1) { ["var":protected]=> int(1) } object(Abuser)#2 (1) { ["var":protected]=> int(0) }

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