php.net |  support |  documentation |  report a bug |  advanced search |  search howto |  statistics |  random bug |  login

go to bug id or search bugs for

Bug #72390 Error in Serialize function
Submitted: 2016-06-12 14:37 UTC Modified: 2016-06-13 11:06 UTC
From: kanduganesh at gmail dot com Assigned: cmb (profile)
Status: Not a bug Package: *General Issues
PHP Version: 5.6.22 OS: Windows 32-bit
Private report: No CVE-ID: None
View Developer Edit
Welcome back! If you're the original bug submitter, here's where you can edit the bug or add additional notes.
If you forgot your password, you can retrieve your password here.
Password:
Status:
Package:
Bug Type:
Summary:
From: kanduganesh at gmail dot com
New email:
PHP Version: OS:

 

 [2016-06-12 14:37 UTC] kanduganesh at gmail dot com 
Description:
------------
getting error or corrupt output of serialized string when i am serializing array


Test script:
---------------
<?php

echo "<pre>";
$ser = array(
	2206427175 => 'user'
	);

$ser = serialize($ser);
print_r(unserialize($ser));


Expected result:
----------------
Array
(
    [2206427175] => user
)

Actual result:
--------------
Array
(
    [-2088540121] => user
)

Patches

serialize_integer_key_size_problem (last revision 2016-06-12 14:42 UTC by kanduganesh at gmail dot com)

Pull Requests

History

AllCommentsChangesGit/SVN commitsRelated reports
 [2016-06-13 11:06 UTC] cmb@php.net
-Status: Open +Status: Not a bug -Operating System: Windows +Operating System: Windows 32-bit -Assigned To: +Assigned To: cmb
 [2016-06-13 11:06 UTC] cmb@php.net 
That's obviously an integer overflow on a 32-bit system (no issue
on 64-bit systems, see <https://3v4l.org/4SLi0>), and as such is
expected behavior, so this is not a bug.

Note that on 32-bit systems `var_dump(2206427175)` prints
`double(2206427175)`, and the documentation states[1] that "Floats
are also cast to integers, […]", so in your case the array has
already the negative key, so serialize() behaves correctly; to
verify do

    print_r(array(2206427175 => 'user'))

[1] <http://php.net/manual/en/language.types.array.php#example-99>
 
PHP Copyright © 2001-2025 The PHP Group
All rights reserved. 		Last updated: Sun Oct 26 02:00:01 2025 UTC