ID: 28106
User updated by: kupka at learninglab dot de
-Summary: New object model fails - old style works fine
Reported By: kupka at learninglab dot de
Status: Open
Bug Type: Zend Engine 2 problem
Operating System: Mac OS X
-PHP Version: 5.0.0RC2
+PHP Version: 5.0.0RC3
New Comment:
In PHP 5 Release Candidate 3 the problem still exists.
Previous Comments:
------------------------------------------------------------------------
[2004-05-08 10:32:19] antonr at game dot permonline dot ru
So, there is a problem with serialization and deserialization of
objects with references to others objects.
------------------------------------------------------------------------
[2004-05-08 10:27:17] antonr at game dot permonline dot ru
5.0.0 RC2, Win32
----------------------------------
<?php
class MyClass
{ public $number;
function EchoNum()
{ echo $this->number;
echo "<br>";
}
}
$a = new MyClass;
$a->number = 1;
$b = $a;
$b->number = 2;
$a->EchoNum();
$b->EchoNum();
?>
outputs:
2
2
----------------------------------
but...
<?php
class MyClass1
{ public $myclass2;
}
class MyClass2
{ public $myclass1;
}
$a = new MyClass1;
$a->myclass2 = new MyClass2;
$a->myclass2->myclass1 = $a;
$a->number = 1;
echo $a->myclass2->myclass1->number;
echo "<br>";
$c = serialize($a);
echo $c;
echo "<br><br>";
$b = unserialize($c);
$b->number = 2;
echo $b->number;
echo "<br>";
echo $b->myclass2->myclass1->number;
echo "<br>";
echo "<br>";
?>
outputs:
1
O:8:"MyClass1":2:{s:8:"myclass2";O:8:"MyClass2":1:{s:8:"myclass1";O:8:"MyClass1":2:{s:8:"myclass2";r:2;s:6:"number";i:1;}}s:6:"number";i:1;}
2
1
----------------------------------
while:
<?php
class MyClass1
{ public $myclass2;
}
class MyClass2
{ public $myclass1;
}
$a = new MyClass1;
$a->myclass2 = new MyClass2;
$a->myclass2->myclass1 = &$a; <--- ampersand symbol added
$a->number = 1;
echo $a->myclass2->myclass1->number;
echo "<br>";
$c = serialize($a);
echo $c;
echo "<br><br>";
$b = unserialize($c);
$b->number = 2;
echo $b->number;
echo "<br>";
echo $b->myclass2->myclass1->number;
echo "<br>";
echo "<br>";
?>
works fine and outputs:
1
O:8:"MyClass1":2:{s:8:"myclass2";O:8:"MyClass2":1:{s:8:"myclass1";r:1;}s:6:"number";i:1;}
2
2
------------------------------------------------------------------------
[2004-04-26 10:31:19] kupka at learninglab dot de
In PHP 5 Release Candidate 2 the problem still exists.
The second script generates three different CStore
objects, but there should only be one CStore objec and
the two CHello objects should have a pointer to the same
CStore object.
------------------------------------------------------------------------
[2004-04-25 16:48:45] kupka at learninglab dot de
The second script:
session_start();
$store->value = 123;
echo "store id: $store<br>";
$store->object1->hello();
$store->object2->hello();
------------------------------------------------------------------------
[2004-04-22 13:34:09] kupka at learninglab dot de
Description:
------------
You have a main object which includes some other
objects. This object is stored in the session. The
other objects have a reference to the main object. If
you start a new session these references should point to
the main object. If you pass the objects to the main
object in the old style with "&" this works fine. If you
use the new style without "&" it doesn't work as
exspected.
Reproduce code:
---------------
The classes:
class CHello
{
var $store;
// this doesn't work as exspected
public function CHello($store)
{
$this->store = $store;
}
/*
// this works fine
public function CHello(&$store)
{
$this->store =& $store;
}
*/
public function hello( )
{
$v = $this->store->value;
echo "Hello World: value is $v. (store id: $this->store)<br>";
}
}
class CStore
{
var $object1;
var $object2;
var $value = 0;
}
---------------------------
The first script:
session_start();
$store = new CStore;
$hello1 = new CHello($store);
$hello2 = new CHello($store);
$store->value = 999;
$store->object1 = $hello1;
$store->object2 = $hello2;
echo "store id: $store<br>";
$store->object1->hello();
$store->object2->hello();
session_register("store");
---------------------------
The second script:
session_start();
$store->value = 123;
echo "store id: $store<br>";
echo $store->object1->hello();
echo $store->object2->hello();
Expected result:
----------------
The first script where the objects are generated:
store id: Object id #4
Hello World: value is 999. (store id: Object id #4)
Hello World: value is 999. (store id: Object id #4)
The second script:
store id: Object id #1
Hello World: value is 123. (store id: Object id #1)
Hello World: value is 123. (store id: Object id #1)
Actual result:
--------------
The first script where the objects are generated:
store id: Object id #6
Hello World: value is 999. (store id: Object id #6)
Hello World: value is 999. (store id: Object id #6)
The second script:
store id: Object id #1
Hello World: value is 999. (store id: Object id #3)
Hello World: value is 999. (store id: Object id #5)
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=28106&edit=1
