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<?php class Foo { private $bar = 'baz'; } $reader = function & ($object, $property) { $value = & Closure::bind(function & () use ($property) { return $this->$property; }, $object, null)->__invoke(); return $value; }; $foo = new Foo(); $bar = & $reader($foo, 'bar'); $bar = 'tab'; var_dump($foo);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Cannot access private property Foo::$bar in /in/rQ9Ms:10 Stack trace: #0 /in/rQ9Ms(11): Closure->{closure}() #1 /in/rQ9Ms(11): Closure->__invoke() #2 /in/rQ9Ms(17): {closure}(Object(Foo), 'bar') #3 {main} thrown in /in/rQ9Ms on line 10
Process exited with code 255.

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