Bug #52794 [NEW]: $a = $b = $c = $d logic with ArrayObject

From: Date: Tue, 07 Sep 2010 14:53:30 +0000
Subject: Bug #52794 [NEW]: $a = $b = $c = $d logic with ArrayObject
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-154155@lists.php.net to get a copy of this message 
From:             
Operating system: 
PHP version:      5.3.3
Package:          Arrays related
Bug Type:         Bug
Bug description:$a = $b = $c = $d logic with ArrayObject

Description:
------------
If i use expression like
$a = $b = $c = $d;

where $b or $c determined as class extends ArrayObject, then
ArrayObject::offsetGet method do not call.

It may be only if above expression interpreted as
$a = $d;
$b = $d;
$c = $d;

Test script:
---------------
class foo extends ArrayObject{
  function offsetGet($index){return 'Ok';}
}
$o = new foo();
$a = $o[1];
$b = ($o[1] = 'Fail');
echo $a,$b;
//Output: OkFail

//but if

$o[1] = 'Fail';
$b = $o[1];
echo $a,$b;
//Output: OkOk


-- 
Edit bug report at http://bugs.php.net/bug.php?id=52794&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=52794&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=52794&r=trysnapshot53
Try a snapshot (trunk):              http://bugs.php.net/fix.php?id=52794&r=trysnapshottrunk
Fixed in SVN:                        http://bugs.php.net/fix.php?id=52794&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=52794&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=52794&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=52794&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=52794&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=52794&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=52794&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=52794&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=52794&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=52794&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=52794&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=52794&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=52794&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=52794&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=52794&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=52794&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=52794&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=52794&r=mysqlcfg

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