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Bug #35895 __sleep and private property
Submitted: 2006-01-04 17:36 UTC Modified: 2012-10-01 15:21 UTC
Votes:19
Avg. Score:4.7 ± 0.7
Reproduced:16 of 17 (94.1%)
Same Version:4 (25.0%)
Same OS:4 (25.0%)
From: f dot hardy at origami-systems dot com Assigned:
Status: No Feedback Package: Scripting Engine problem
PHP Version: 5.1.2 OS: Freebsd 6
Private report: No CVE-ID: None
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 [2006-01-04 17:36 UTC] f dot hardy at origami-systems dot com
Description:
------------
if __sleep return a private property in its array, php say :
Unknown: "foo" returned as member variable from __sleep() but does not exist



Reproduce code:
---------------
<?php

class foo
{
   private $foo = array();

   public function __construct()
   {
      ;
   }

   public function __sleep()
   {
       return array('foo');
   }
}

?>

Expected result:
----------------
php must find a private property wich is return by __sleep.

Actual result:
--------------
Unknown: "foo" returned as member variable from __sleep() but does not exist

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 [2006-01-04 18:57 UTC] f dot hardy at origami-systems dot com
It is the same bug than #26737, which is closed !!
The workaround return array("a",
    //              "\0*\0b",
    //              "\0" . __CLASS__ . "\0c");
is ok !
 [2006-01-04 20:41 UTC] sniper@php.net
This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.
 
Thank you for the report, and for helping us make PHP better.


 [2006-01-20 14:39 UTC] f dot hardy at origami-systems dot com
This bugs is always alive in php 5.1.2.
Please correct it !
 [2006-01-20 14:49 UTC] tony2001@php.net
Please try using this CVS snapshot:

  http://snaps.php.net/php5.1-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5.1-win32-latest.zip


 [2006-01-28 01:00 UTC] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 [2006-05-23 17:27 UTC] f dot hardy at origami-systems dot com
Bug is still alive in php 5.1.4 under freebsd.
Please correct it !
 [2006-05-23 17:54 UTC] amt@php.net
Please try using this CVS snapshot:

  http://snaps.php.net/php5.2-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php5.2-win32-latest.zip

I cannot reproduce (on Linux) using latest 5.2 CVS. Can you please try a snapshot from the 5.2 series and let me know if it's fixed for you there?
 [2006-05-31 01:00 UTC] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 [2006-06-18 17:43 UTC] jona at oismail dot com
Reproduced on Windows 2000 when using __sleept() with aggregated objects as private memembers.
The bug has been reproduced in both PHP 5.2-dev (from link below) and PHP 5.1.4.

The following script can be used to reproduce the error:
<?php
class TestParent
{
	private $parentPrivateVar;
	protected $parentProtectedVar;
	public $parentPublicVar;
	
	public function __construct($private, $protected, $public)
	{
		$this->parentPrivateVar = $private;
		$this->parentProtectedVar = $protected;
		$this->parentPublicVar = $public;
	}
	
	function __sleep()
	{
		return array("parentPrivateVar", "parentProtectedVar", "parentPublicVar");
	}
}

class TestChild extends TestParent
{
	private $childPrivateVar;
	protected $childProtectedVar;
	public $childPublicVar;
	
	public function __construct($private, $protected, $public)
	{
		$this->childPrivateVar = "child_". $private;
		$this->childProtectedVar = "child_". $protected;
		$this->childPublicVar = "child_". $public;
		
		parent::__construct("parent_". $private, "parent_". $protected, "parent_". $public);
	}
	
	function __sleep()
	{
		return array_merge(array("childPrivateVar", "childProtectedVar", "childPublicVar"), parent::__sleep() );
	}
}

class WebSession
{
	private $privateVar;
	private $privateAggregatedObject;
	
	public function __construct($private, TestChild &$o)
	{
		$this->privateVar = $private;
		$this->privateAggregatedObject = $o;
	}
		
	public function __sleep() { return array("privateVar", "privateAggregatedObject"); }

	public function getPrivateVar() { return $this->privateVar; }
		
	public function getObject() { return $this->privateAggregatedObject; }
}

// Report simple running errors
error_reporting(E_ERROR | E_PARSE | E_WARNING | E_NOTICE | E_STRICT | E_USER_ERROR | E_USER_WARNING | E_USER_NOTICE);

// Start user session
session_start();

if(isset($_SESSION['obj_Info']) === false)
{
	$_SESSION['obj_Info'] = new WebSession("private variable", new TestChild("private", "protected", "public") );
}

echo "<pre>";
var_dump($_SESSION['obj_Info']);
echo "</pre>";
echo "<hr />";
echo "TEST: ". $_SESSION['obj_Info']->getPrivateVar() ."<br />";
echo "OBJECT: ". $_SESSION['obj_Info']->getObject() ."<br />";
echo "OBJECT PUBLIC VAR: ". $_SESSION['obj_Info']->getObject()->childPublicVar ."<br />";
?>

GIVES THE FOLLOWING OUTPUT IN PHP 5.1.4:
object(WebSession)#1 (2) {
  ["privateVar:private"]=>
  string(16) "private variable"
  ["privateAggregatedObject:private"]=>
  object(TestChild)#2 (6) {
    ["childPrivateVar:private"]=>
    string(13) "child_private"
    ["childProtectedVar:protected"]=>
    string(15) "child_protected"
    ["childPublicVar"]=>
    string(12) "child_public"
    ["parentPrivateVar:private"]=>
    string(14) "parent_private"
    ["parentProtectedVar:protected"]=>
    string(16) "parent_protected"
    ["parentPublicVar"]=>
    string(13) "parent_public"
  }
}

TEST: private variable
OBJECT: Object id #2
OBJECT PUBLIC VAR: child_public

Notice: Unknown: "parentPrivateVar" returned as member variable from __sleep() but does not exist in Unknown on line 0

The notice is only thrown on the initial run with "parentPrivateVar" is actually set.
The notice is not thrown if "parentPrivateVar" is null.

In PHP 5.2-dev the scrip dies line 76: echo "OBJECT: ". $_SESSION['obj_Info']->getObject() ."<br />";
The notice is still thrown when "parentPrivateVar" is set though.
 [2006-08-24 09:47 UTC] f dot hardy at origami-systems dot com
Bug is always alive in php 5.1.5 under freebsd 6.0.
 [2006-08-24 10:11 UTC] tony2001@php.net
Thank you for this bug report. To properly diagnose the problem, we
need a short but complete example script to be able to reproduce
this bug ourselves. 

A proper reproducing script starts with <?php and ends with ?>,
is max. 10-20 lines long and does not require any external 
resources such as databases, etc. If the script requires a 
database to demonstrate the issue, please make sure it creates 
all necessary tables, stored procedures etc.

Please avoid embedding huge scripts into the report.


 [2006-09-01 01:00 UTC] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
 [2011-02-20 16:35 UTC] somiara at hotmail dot com
No comment. Same problem. 2011...

Apache/Windows: php-version 5.2.4
Apache/RH: php-version 5.3.1

Notice: serialize() [function.serialize]: "module_instancename" returned as member variable from __sleep() but does not exist in...
 [2011-05-19 15:41 UTC] info at strictcoding dot co dot uk
Same problem, 5 years later. Could anyone re-open this bug?
PHP 5.3.5, Windows.
 [2012-10-01 13:51 UTC] hrecho at gmail dot com
i see this issue in 5.3.8
 [2012-10-01 15:21 UTC] laruence@php.net
according to the test script provided by jona at oismail dot com:

it's a expected behavior, you can not access parent's private property.
 
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