Online PHP editor | output for 8f3H6

<?php class Item { public static function newWithParent(Item $parent) { $item = new Item(); $item->parent = $parent; return $item; } private $parent; public getParent() { return $parent; } } $item = Item::newWithParent(Item::newWithParent(Item::newWithParent(new Item()))); // Basically it's this now: {"parent":{"parent":{"parent":{"parent":null}}}} // I want to set that null value do { $item = $item->getParent(); if ($item->getParent() === null) { $item =& Item::newWithParent($item); break; } } while (true); var_dump($item);