Bug #52521 [Fbk->Opn]: self-referenced array is copied instead of referenced after serialization
Edit report at http://bugs.php.net/bug.php?id=52521&edit=1
ID: 52521
User updated by: martin dot leucht at gmail dot com
Reported by: martin dot leucht at gmail dot com
-Summary: serialize() loses reference to root
+Summary: self-referenced array is copied instead of
referenced after serialization
-Status: Feedback
+Status: Open
Type: Bug
-Package: *Programming Data Structures
+Package: Arrays related
Operating System: WIN32
PHP Version: 5.3.3
Block user comment: N
New Comment:
// updated bug information
Previous Comments:
------------------------------------------------------------------------
[2010-08-04 22:50:22] martin dot leucht at googlemail dot com
It seems it is array-related. The same thing using the stdclass works
fine.
Test script:
------------
<?php
$Object = (object)array(
'a' => 1,
'b' => &$Object,
);
print_r($Object);
$Array = array(
'a' => 1,
'b' => &$Array,
);
print_r($Array);
$Array = unserialize(serialize($Array));
$Object = unserialize(serialize($Object));
$Object->b->a = 2;
print_r($Object);
$Array['b']['a'] = 2;
print_r($Array);
?>
Actual result:
--------------
stdClass Object
(
[a] => 1
[b] => stdClass Object
*RECURSION*
)
Array
(
[a] => 1
[b] => Array
(
[a] => 1
[b] => Array
*RECURSION*
)
)
stdClass Object
(
[a] => 2
[b] => stdClass Object
*RECURSION*
)
Array
(
[a] => 1
[b] => Array
(
[a] => 2
[b] => Array
*RECURSION*
)
)
------------------------------------------------------------------------
[2010-08-04 22:03:08] martin dot leucht at googlemail dot com
Okay, I finally made it though. I setup a build environment, built the
latest dev-version of PHP and ran the test script. But still: identical
results.
Please tell me how can I provide some help or assistence to solve this
issue?!
------------------------------------------------------------------------
[2010-08-03 13:23:39] martin dot leucht at gmail dot com
Sorry, but there are no builds on the Windows snapshots page and as I do
not maintain a PHP build environment (nor am currently willing to do so
due to a lack of time) I can not test it right now.
Could you please give me a hint when the snapshot builds are available
or if anyone else can do this test using the given test script above.
------------------------------------------------------------------------
[2010-08-03 09:53:39] mike@php.net
Please try using this snapshot:
http://snaps.php.net/php-trunk-latest.tar.gz
For Windows:
http://windows.php.net/snapshots/
Could you please try a trunk snapshot, IIRC this problem might be fixed
already.
Thanks.
------------------------------------------------------------------------
[2010-08-03 09:27:20] martin dot leucht at gmail dot com
I have to correct myself:
> If I unserialize the "correct" serialized string, it works correctly.
It just works for print_r() afterwards, but if I do some stuff on the
referenced value it creates even more confusing structures.
Test script:
------------
echo "*** using correct value ***\n\n";
$Array = unserialize('a:2:{s:1:"a";i:1;s:1:"b";R:1;}');
echo "print_r():\n";
echo "----------\n";
print_r($Array);
echo "\n";
$Array['b']['a'] = 2;
echo "print_r():\n";
echo "----------\n";
print_r($Array);
echo "\n";
Actual result
-------------
*** using correct value ***
print_r():
----------
Array
(
[a] => 1
[b] => Array
*RECURSION*
)
print_r():
----------
Array
(
[a] => 1
[b] => Array
(
[a] => 2
[b] => Array
(
[a] => 1
[b] => Array
*RECURSION*
)
)
)
Expected result
---------------
*** using correct value ***
print_r():
----------
Array
(
[a] => 1
[b] => Array
*RECURSION*
)
print_r():
----------
Array
(
[a] => 2
[b] => Array
*RECURSION*
)
------------------------------------------------------------------------
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