#31942 [Opn->Fbk]: foreach and object members mixing badly

From: Date: Fri, 02 Sep 2005 05:46:03 +0000
Subject: #31942 [Opn->Fbk]: foreach and object members mixing badly
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-84359@lists.php.net to get a copy of this message 
 ID:               31942
 Updated by:       sniper@php.net
 Reported By:      adrian-phpbugs at sixfingeredman dot net
-Status:           Open
+Status:           Feedback
-Bug Type:         Variables related
+Bug Type:         Arrays related
 Operating System: Linux
-PHP Version:      PHP 4.3.11-dev
+PHP Version:      4.3.11-dev
 New Comment:

Please try using this CVS snapshot:

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




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

[2005-02-12 00:22:04] adrian-phpbugs at sixfingeredman dot net

The version says: (built: Jan  5 2005 08:54:18)

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

[2005-02-12 00:19:59] adrian-phpbugs at sixfingeredman dot net

Description:
------------
This might be related to #5052. The code below illustrates the problem
pretty well -- the class method should be returning a fresh copy of the
field but in fact the return value is sharing the foreach-counter so
that nested foreaches break. If I do something to force a copy, like
"$foo->_member =& $foo->_member" (I have no idea *why* this forces a
copy), then it works.

Reproduce code:
---------------
<?
class foo {
        var $_member = array(1, 2, 3);
        function member() {
                return $this->_member;
        }
}
$foo = new foo();
#$foo->_member =& $foo->_member;

$size = 0;
foreach ($foo->member() as $v) {
        $size++;
        foreach ($foo->member() as $v) {}
}
if ($size < count($foo->member())) die("BUG FOUND");


Expected result:
----------------
I expect $size == count($foo->member()). If you uncomment the commented
line, it works.

Actual result:
--------------
The inner foreach iterates through every value, but the outer foreach
only iterates through the first value.


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


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Edit this bug report at http://bugs.php.net/?id=31942&edit=1

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