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<?php class A { protected $a = 'A'; public function setA($a) { $this->a = $a; } public function getA() { return $this->a; } } class B { protected $a; public function setA(A $a) { $this->a = $a; } public function getA() { return $this->a; } } $b = new B(); $b->setA(new A()); var_dump($b); $c = clone($b); var_dump($c);
Output for git.master, git.master_jit, rfc.property-hooks
object(B)#1 (1) { ["a":protected]=> object(A)#2 (1) { ["a":protected]=> string(1) "A" } } object(B)#3 (1) { ["a":protected]=> object(A)#2 (1) { ["a":protected]=> string(1) "A" } }

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