<?php class HasProp { public int $x; public function __sleep() { return ['x']; } } $x = new HasProp(); // string(28) "O:7:"HasProp":1:{s:1:"x";N;}" var_dump($s = serialize($x)); // Fatal error: Uncaught TypeError: Typed property HasProp::$x must be int, null used in ... unserialize($s);
You have javascript disabled. You will not be able to edit any code.