Online PHP editor | refs for NlDsB

<?php class Foo { public $obj; } class Zoo { public $obj; public function show() { var_dump($this->obj); } } class Bar {} class Baz {} $foo = new Foo(); $zoo = new Zoo(); $a = new Bar(); $b = new Baz(); $zoo->obj = &$foo->obj; $zoo->show(); $foo->obj = $a; $zoo->show(); $foo->obj = $b; $zoo->show();