From: mmertinkat at justseven dot de
Operating system: Windows XP
PHP version: 4.3.6
PHP Bug Type: Scripting Engine problem
Bug description: Strange behaviour using references
Description:
------------
Just look at the code; it is reproducible with PHP 4.3.4, 4.3.5 and 4.3.6
on Windows and Linux.
Reproduce code:
---------------
<?
$data = NULL;
$data['settings']['account']['firstname'] = 'Johnny';
$data['settings']['account']['lastname'] = 'Walker';
$data['settings']['account']['username'] = 'johnny';
$data['settings']['account']['password'] = 'not secret';
/**********************************************/
print_r($data);
$settings = $data['settings'];
$account = &$settings['account'];
// we're now going to change the account password and therefore
// use the $account array as a "shortcut" (reference) to
$settings['account']
$account['password'] = 'secret';
// write any changes into the data array
$data['settings'] = $settings;
/******************/
// the following two lines will (mistakenly?) touch the $data array
...
$mysettings = $data['settings'];
$mysettings['account']['password'] = 'very secret';
// ... whereas the next two lines don't change anything (as it should
be)
$myaccount = $data['settings']['account'];
$myaccount['password'] = 'very very secret';
print_r($data);
?>
Expected result:
----------------
Array
(
[settings] => Array
(
[account] => Array
(
[firstname] => Johnny
[lastname] => Walker
[username] => johnny
[password] => not secret
)
)
)
Array
(
[settings] => Array
(
[account] => Array
(
[firstname] => Johnny
[lastname] => Walker
[username] => johnny
[password] => secret
)
)
)
Actual result:
--------------
Array
(
[settings] => Array
(
[account] => Array
(
[firstname] => Johnny
[lastname] => Walker
[username] => johnny
[password] => not secret
)
)
)
Array
(
[settings] => Array
(
[account] => Array
(
[firstname] => Johnny
[lastname] => Walker
[username] => johnny
[password] => very secret
)
)
)
--
Edit bug report at http://bugs.php.net/?id=28050&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=28050&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=28050&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=28050&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=28050&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=28050&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=28050&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=28050&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=28050&r=support
Expected behavior: http://bugs.php.net/fix.php?id=28050&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=28050&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=28050&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=28050&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=28050&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=28050&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=28050&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=28050&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=28050&r=float
