From: gmtfn at yahoo dot com
Operating system: Linux
PHP version: 5.2.6
PHP Bug Type: Session related
Bug description: serialize() modifies objects
Description:
------------
Calling serialize() on an object whose name is the same as the key under
which it's saved in $_SESSION makes the object unusable (its methods can't
be called.
If I store store a serialized version of the object under a key that's
different from the name of the variable that points to the object, then
everything works fine. If this is by design and must remain this way, I
want to tell you that this is VERY counterintuitive and must be prominently
documented.
I can reproduce this on a Linux server (with PHP 5.2.5 and 5.2.6) but not
on Windows Vista.
Reproduce code:
---------------
<?php
session_start();
ob_start();
class GoodObject {
private $count = 0;
public function doSmth()
{
echo "$this->count <br>";
$this->count++;
}
}
if(!isset($_SESSION['myObj'])) {
$myObj = new GoodObject();
}
else {
$s = $_SESSION['myObj'];
$myObj = unserialize($s);
}
$myObj->doSmth();
$s = serialize($myObj);
$_SESSION['myObj'] = $s;
$myObj->doSmth(); // this fails on the second page load
?>
Expected result:
----------------
Converting an object to a string should not change the object, and the
last statement in this script should output the value of $count.
Actual result:
--------------
On the second load of the page, I get this:
Fatal error: Call to a member function doSmth() on a non-object in [path
to the file] on line 26
--
Edit bug report at http://bugs.php.net/?id=45816&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=45816&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=45816&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=45816&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=45816&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=45816&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=45816&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=45816&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=45816&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=45816&r=support
Expected behavior: http://bugs.php.net/fix.php?id=45816&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=45816&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=45816&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=45816&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=45816&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=45816&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=45816&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=45816&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=45816&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=45816&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=45816&r=mysqlcfg
