#50681 [NEW]: array of objects: copying passes reference instead of copy

From: Date: Wed, 06 Jan 2010 19:15:15 +0000
Subject: #50681 [NEW]: array of objects: copying passes reference instead of copy
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-146391@lists.php.net to get a copy of this message 
From:             israel at toxinworks dot com
Operating system: RedHat EL5
PHP version:      5.2.12
PHP Bug Type:     Class/Object related
Bug description:  array of objects: copying passes reference instead of copy

Description:
------------
PHP 5 does not copy object from array[ndx] to a new array entry, instead
it seems to pass a reference to the original.

Reproduce code:
---------------
function fetchData()
{
   // return array of objects
}

$arr = fetchData();
$newNdx = count($arr);
$arr[$newNdx] = $arr[0]; // create copy of first object
$arr[$newNdx]->description = 'Change description';



Expected result:
----------------
The result is that $arr[0]->description will also have changed when we
modified $arr[$newNdx]->description, therefor not copying, but more like
creating a reference to the original.

This happens only in PHP 5, not 4.


-- 
Edit bug report at http://bugs.php.net/?id=50681&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=50681&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=50681&r=trysnapshot53
Try a snapshot (PHP 6.0):            http://bugs.php.net/fix.php?id=50681&r=trysnapshot60
Fixed in SVN:                        http://bugs.php.net/fix.php?id=50681&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=50681&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=50681&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=50681&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=50681&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=50681&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=50681&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=50681&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=50681&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=50681&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=50681&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=50681&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=50681&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=50681&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=50681&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=50681&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=50681&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=50681&r=mysqlcfg

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