<?php class UserNotFoundException extends \Exception {} function check_user_exists($user_id) { // check user account hasn't been deleted, otherwise throw: throw new UserNotFoundException("exceptions for flow control are great.\n"); } class User { private $id = 5; function __unserialize(array $data) { check_user_exists($data["\x00User\x00id"]); } } $user = new User(); $data = serialize($user); echo "$data \n"; try { $result = unserialize($data); } catch (UserNotFoundException $unfe) { echo "redirect user to login page\n"; exit(0); } echo "User is valid.\n";
You have javascript disabled. You will not be able to edit any code.