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<?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 $this->obj; } public function serialize() { for ($i = 0; $i < 10; ++$i) { var_dump(serialize(new \stdClass())); } return serialize($this->obj); } public function unserialize($serialized) { $this->obj = unserialize($serialized); } } $wrapper = new WrapperObject(new ObjectWithReferences()); var_dump($wrapper->getObject()); $serialized = serialize($wrapper); var_dump($serialized); $wrapper = unserialize($serialized);
based on XaTAq
Output for 7.0.0 - 7.2.0
object(ObjectWithReferences)#2 (2) { ["var1":protected]=> object(stdClass)#3 (0) { } ["var2":protected]=> object(stdClass)#3 (0) { } } string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(110) "C:13:"WrapperObject":84:{O:20:"ObjectWithReferences":2:{s:7:"*var1";O:8:"stdClass":0:{}s:7:"*var2";r:13;}}" Notice: unserialize(): Error at offset 83 of 84 bytes in /in/lUC11 on line 34
Output for 5.4.22 - 5.6.28
object(ObjectWithReferences)#2 (2) { ["var1":protected]=> object(stdClass)#3 (0) { } ["var2":protected]=> object(stdClass)#3 (0) { } } string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(4) "r:2;" string(4) "r:3;" string(4) "r:4;" string(4) "r:2;" string(4) "r:3;" string(4) "r:4;" string(4) "r:2;" string(110) "C:13:"WrapperObject":84:{O:20:"ObjectWithReferences":2:{s:7:"*var1";O:8:"stdClass":0:{}s:7:"*var2";r:13;}}" Notice: unserialize(): Error at offset 83 of 84 bytes in /in/lUC11 on line 34
Output for 5.4.1 - 5.4.21
object(ObjectWithReferences)#2 (2) { ["var1":protected]=> object(stdClass)#3 (0) { } ["var2":protected]=> object(stdClass)#3 (0) { } } string(19) "O:8:"stdClass":0:{}" string(4) "r:2;" string(4) "r:2;" string(4) "r:2;" string(4) "r:2;" string(4) "r:2;" string(4) "r:2;" string(4) "r:2;" string(4) "r:2;" string(4) "r:2;" string(110) "C:13:"WrapperObject":84:{O:20:"ObjectWithReferences":2:{s:7:"*var1";O:8:"stdClass":0:{}s:7:"*var2";r:13;}}" Notice: unserialize(): Error at offset 83 of 84 bytes in /in/lUC11 on line 34
Output for 5.3.18 - 5.3.29
object(ObjectWithReferences)#2 (2) { ["var1":protected]=> object(stdClass)#3 (0) { } ["var2":protected]=> object(stdClass)#3 (0) { } } string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(19) "O:8:"stdClass":0:{}" string(109) "C:13:"WrapperObject":83:{O:20:"ObjectWithReferences":2:{s:7:"*var1";O:8:"stdClass":0:{}s:7:"*var2";r:2;}}"