From:
Operating system: FREEBSD 8.0
PHP version: 5.2.13
Package: Arrays related
Bug Type: Bug
Bug description:foreach structure pass by reference scope issue
Description:
------------
When an ampersand operator is used in a foreach language construct The pass
by reference variable causes *copies* of the parent array used in the
foreach loop to be modified in any future use of the initial pass by
reference variable.
This is very hard to explain clearly but see the test script below for
clarification it is a very simple test script.'
Similar bugs like this have been reported and documentation outlines a
simple workaround that does work and solves my problem.
but I figured I would report this problem as *copies* of the array are
affected and it seems kind of strange.
Test script:
---------------
class Monkey{
public $bananas=array();
public function AddBananas($bananas){
$this->bananas=$bananas;
}}
$bananas=array();
$bananas['banana1']=array('color'=>'yellow','size'=>'big');
$bananas['banana2']=array('color'=>'green','size'=>'small');
$coconuts=array();
$coconuts['coconut1']['size']='tiny';
$coconuts['coconut2']['size']="I'm a";
$monkey=new Monkey();
foreach($bananas as $key=>&$banana){
$banana['id']=$key+1;
}
$monkey->AddBananas($bananas);
foreach($coconuts as $banana){
$banana['type']="coconut!";
}
print_r($monkey->bananas);
Expected result:
----------------
Array
(
[banana1] => Array
(
[color] => yellow
[size] => big
[id] => 1
)
[banana2] => Array
(
[color] => green
[size] => small
[id] => 2
)
)
Actual result:
--------------
Array
(
[banana1] => Array
(
[color] => yellow
[size] => big
[id] => 1
)
[banana2] => Array
(
[size] => I'm a
[type] => coconut!
)
)
--
Edit bug report at http://bugs.php.net/bug.php?id=51409&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=51409&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=51409&r=trysnapshot53
Try a snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=51409&r=trysnapshot60
Fixed in SVN:
http://bugs.php.net/fix.php?id=51409&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=51409&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=51409&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=51409&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=51409&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=51409&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=51409&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=51409&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=51409&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=51409&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=51409&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=51409&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=51409&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=51409&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=51409&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=51409&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=51409&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=51409&r=mysqlcfg
