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<?php class Foo { private $bar; } class Friend extends Foo { public $bar; function __construct(Foo $foo) { (function (Foo $foo) { $this->bar = & $foo->bar; })->bindTo($this, 'Foo')->__invoke($foo); $this->bar = & $foo->bar; } } $foo = new Foo(); $friend = new Friend($foo); var_dump($foo); $friend->bar = 'baz'; var_dump($foo);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Cannot access private property Foo::$bar in /in/VoVST:14 Stack trace: #0 /in/VoVST(19): Friend->__construct(Object(Foo)) #1 {main} thrown in /in/VoVST on line 14
Process exited with code 255.

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