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<?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";
Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
O:4:"User":1:{s:8:"Userid";i:5;} redirect user to login page
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33
O:4:"User":1:{s:8:"Userid";i:5;} User is valid.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YQFXH on line 3 O:4:"User":1:{s:8:"Userid";i:5;} User is valid.
Output for 5.0.0 - 5.0.5
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YQFXH on line 3 Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/YQFXH on line 15
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YQFXH on line 3 Parse error: syntax error, unexpected T_NEW in /in/YQFXH on line 8
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YQFXH on line 3 Parse error: parse error, unexpected T_NEW in /in/YQFXH on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/YQFXH on line 3 Parse error: parse error in /in/YQFXH on line 8
Process exited with code 255.
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