ID: 37715
Updated by: [EMAIL PROTECTED]
Reported By: cmlburnett at gmail dot com
-Status: Open
+Status: Bogus
Bug Type: Arrays related
Operating System: Linux 2.6
PHP Version: 5.1.4
New Comment:
>Having made no changes to $a I would expect nothing about
> $a to change. As an end-user, if I'm making a *copy* of
> something then I would not expect the original to change
> and this would include internal state.
I hope you don't expect to be able to make a copy without reading the
original data - this is when the pointer is changed.
This is expected and not going to be changed.
Previous Comments:
------------------------------------------------------------------------
[2006-06-06 15:27:02] cmlburnett at gmail dot com
Description:
------------
If I have an array of arrays and I iterate over the parent array with a
foreach loop "foreach($a as $k => $d)" then the internal pointers of the
subarrays will be reset. I presume this is caused by copying $a[$k]
into $d on each iteration. It is also reproduced by simply doing an
array copy "$c = $a".
Ultimately, this is an issue of array copying.
Reproduce code:
---------------
$a = array(
'a' => array(
'A', 'B', 'C', 'D',
),
'b' => array(
'AA', 'BB', 'CC', 'DD',
),
);
// Set the pointer of $a to 'b' and the pointer of 'b' to 'CC'
reset($a);
next($a);
next($a['b']);
next($a['b']);
next($a['b']);
var_dump(key($a['b']));
foreach($a as $k => $d)
{
}
// Alternatively $c = $a; and foreachloop removal will cause identical
results.
var_dump(key($a['b']));
Expected result:
----------------
int(3)
int(3)
Having made no changes to $a I would expect nothing about $a to change.
As an end-user, if I'm making a *copy* of something then I would not
expect the original to change and this would include internal state.
Really: I would prefer the pointer not change in the original and that
the copy would retain the pointer as well.
Actual result:
--------------
int(3)
int(0)
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=37715&edit=1
