[PHP-DEV] Bug #12775 Updated: Incorrect result using references and objects From: jeroen <email protected>
Date: 08/15/01

ID: 12775
Updated by: jeroen
Reported By: wayne <email protected>
Old Status: Open
Status: Suspended
Bug Type: Scripting Engine problem
Operating System: All
PHP Version: 4.0.6
New Comment:

Shallow copying of objects and arrays bit you...

Will be fixed in PHP 5

Suspended (it could be called a 'feature' though...)

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

[2001-08-15 18:00:05] wayne <email protected>

If you set a property of an object to a global variable, it is no longer possible to make a copy of that object! Every "copy" becomes a reference. Example:

--/ snip /--

class foo
{
        function foo()
        {
                $this->test = 'Test';
                $GLOBALS['test'] =& $this->test;
        }
}

$obj1 = new foo();
$copyOfObj1 = $obj1; // Should be a copy, but is reference

$obj1->test = "changed!";
echo $copyOfObj1->test.'<br>';

--/ snip /--

The result of this code is: "changed!" but it should be "Test". $copyOfObj1 should be a copy of $obj1, but instead it acts like a reference.

If you unset $GLOBALS['test'] then it copies as it should.

This is a bug occurs in all versions of PHP4 on all platforms (from what I can tell).

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

Edit this bug report at http://bugs.php.net/?id=12775&edit=1 

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