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<?php class A { protected $_prot; public function __toString() { return (string) $this->_prot; } } class C extends A { protected $_c = __CLASS__; } class B extends A { static function test(A $a) { // can access protected properties declared in B and all its superclasses // Fatal error: Cannot access protected property C::$_c $a->_prot = 5; echo '_c:', @$a->_c, ", "; echo "_a:", $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
_c:, _a:5 _c:, _a:5 _c: Fatal error: Uncaught Error: Cannot access protected property C::$_c in /in/SfXGG:19 Stack trace: #0 /in/SfXGG(30): B::test(Object(C)) #1 {main} thrown in /in/SfXGG on line 19
Process exited with code 255.

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