From: a dot yamanoi at gmail dot com
Operating system:
PHP version: 5.2.3
PHP Bug Type: SPL related
Bug description: SPL ArrayObject does not use "copy-on-write"
Description:
------------
When ArrayObject::offsetSet() method stores a new value into an array,
I expect ArrayObject to change only the array which is given as a
constructor parameter.
However, if the array is copied from another array and unchanged,
ArrayObject will also change the another array.
I thought it was a "copy-on-write" problem.
thank you for any help
Please excuse my English, it isn't very good.
Reproduce code:
---------------
$base = array('key' => 'old value');
$copy = $base;
$ao = new ArrayObject($copy);
$ao['key'] = 'new value';
echo '$base["key"] = ', $base['key'], "\n";
echo '$copy["key"] = ', $copy['key'], "\n";
echo '$ao["key"] = ', $ao['key'], "\n";
Expected result:
----------------
$base["key"] = old value
$copy["key"] = new value
$ao["key"] = new value
Actual result:
--------------
$base["key"] = new value
$copy["key"] = new value
$ao["key"] = new value
--
Edit bug report at http://bugs.php.net/?id=42065&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=42065&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=42065&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=42065&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=42065&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=42065&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=42065&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=42065&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=42065&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=42065&r=support
Expected behavior: http://bugs.php.net/fix.php?id=42065&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=42065&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=42065&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=42065&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=42065&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=42065&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=42065&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=42065&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=42065&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=42065&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=42065&r=mysqlcfg
