#28106 [Com]: New object model fails where old style works fine

[antonr at game dot permonline dot ru]

 ID:               28106
 Comment by:       antonr at game dot permonline dot ru
 Reported By:      kupka at learninglab dot de
 Status:           Open
 Bug Type:         Zend Engine 2 problem
 Operating System: Mac OS X
 PHP Version:      5.0.0RC3
 New Comment:

to kupka at learninglab dot de:
please check your script with last php5 snapshots... i suppose this bug
was corrected


Previous Comments:
------------------------------------------------------------------------

[2004-06-10 12:23:31] kupka at learninglab dot de

In PHP 5 Release Candidate 3 the problem still exists.

------------------------------------------------------------------------

[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();

------------------------------------------------------------------------

The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
    http://bugs.php.net/28106

-- 
Edit this bug report at http://bugs.php.net/?id=28106&edit=1