From:
Operating system: WIN32
PHP version: 5.3.3
Package: *Programming Data Structures
Bug Type: Bug
Bug description:serialize() loses reference to root
Description:
------------
When trying to serialize -> unserialize a structure (i.e. array) containing
a child (or a subordinate child) referencing the root element (meaning the
structure to serialize) itself, it will be lost afterwards.
This leads to annoying misbehaviour and memory abuse.
If I unserialize the "correct" serialized string, it works correctly. May
be its a bug in reference creation?!
Test script:
---------------
$Array = array(
'a' => 1
);
$Array['b'] = &$Array;
echo "print_r():\n";
echo "----------\n";
print_r($Array);
echo "\n";
echo "serialize():\n";
echo "------------\n";
echo serialize($Array);
echo "\n\n";
echo "print_r(unserialize(serialize())):\n";
echo "----------------------------------\n";
print_r(unserialize(serialize($Array)));
echo "\n";
echo "*** modify referenced value ***\n\n";
$Array['a'] = 2;
echo "print_r():\n";
echo "----------\n";
print_r($Array);
echo "\n";
echo "*** modify re-serialized refererenced value ***\n\n";
$Array['a'] = 1;
$Array = unserialize(serialize($Array));
$Array['a'] = 2;
echo "print_r():\n";
echo "----------\n";
print_r($Array);
echo "\n";
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";
Expected result:
----------------
print_r():
----------
Array
(
[a] => 1
[b] => Array
*RECURSION*
)
serialize():
------------
a:2:{s:1:"a";i:1;s:1:"b";R:1;}
print_r(unserialize(serialize())):
----------------------------------
Array
(
[a] => 1
[b] => Array
*RECURSION*
)
*** modify referenced value ***
print_r():
----------
Array
(
[a] => 2
[b] => Array
*RECURSION*
)
*** modify re-serialized refererenced value ***
print_r():
----------
Array
(
[a] => 2
[b] => Array
*RECURSION*
)
*** using correct value ***
print_r():
----------
Array
(
[a] => 1
[b] => Array
*RECURSION*
)
Actual result:
--------------
print_r():
----------
Array
(
[a] => 1
[b] => Array
(
[a] => 1
[b] => Array
*RECURSION*
)
)
serialize():
------------
a:2:{s:1:"a";i:1;s:1:"b";a:2:{s:1:"a";i:1;s:1:"b";R:3;}}
print_r(unserialize(serialize())):
----------------------------------
Array
(
[a] => 1
[b] => Array
(
[a] => 1
[b] => Array
*RECURSION*
)
)
*** modify referenced value ***
print_r():
----------
Array
(
[a] => 2
[b] => Array
(
[a] => 2
[b] => Array
*RECURSION*
)
)
*** modify re-serialized refererenced value ***
print_r():
----------
Array
(
[a] => 2
[b] => Array
(
[a] => 1
[b] => Array
*RECURSION*
)
)
*** using correct value ***
print_r():
----------
Array
(
[a] => 1
[b] => Array
*RECURSION*
)
--
Edit bug report at http://bugs.php.net/bug.php?id=52521&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=52521&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=52521&r=trysnapshot53
Try a snapshot (trunk):
http://bugs.php.net/fix.php?id=52521&r=trysnapshottrunk
Fixed in SVN:
http://bugs.php.net/fix.php?id=52521&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=52521&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=52521&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=52521&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=52521&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=52521&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=52521&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=52521&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=52521&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=52521&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=52521&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=52521&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=52521&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=52521&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=52521&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=52521&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=52521&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=52521&r=mysqlcfg
