Online PHP editor | refs for 0FP1F

<?php class ObjectWithReferences { protected $var1; protected $var2; public function __construct() { $this->var1 = new StdClass(); $this->var2 = $this->var1; } } class WrapperObject implements Serializable { private $obj; public function __construct($obj) { $this->obj = $obj; } public function getObject() { return $this->obj; } public function serialize() { return serialize($this->obj); } public function unserialize($serialized) { unserialize('O:8:"stdClass":0:{}'); $this->obj = unserialize($serialized); } } $wrapper = new WrapperObject(new ObjectWithReferences()); var_dump($wrapper->getObject()); $wrapper = unserialize(serialize($wrapper)); var_dump($wrapper->getObject());