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<?php class A { protected $_prot; public function __toString() { return (string) $this->_prot; } } class C extends A {} class B extends A { static function test(A $a) { $a->_prot = 5; echo $a, "\n"; } } $a = new A; $b = new B; $c = new C; B::test($a); B::test($b); B::test($c);
Output for git.master, git.master_jit, rfc.property-hooks
5 5 5

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