3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { private $bar; } $friend = null; Closure::bind(function (Foo $foo) use (& $friend) { $friend = & $foo->bar; }, null, 'Foo')->__invoke($foo); $foo = new Foo(); var_dump($foo); $friend = 'baz'; var_dump($foo);

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