From:
Operating system: Windows/Linux
PHP version: 5.3.6
Package: SPL related
Bug Type: Bug
Bug description:ArrayObject creates invalid variable reference
Description:
------------
If ArrayAccess is extended and then the subclass accessed using object
notation then unpredicatable results occur. In the test script below an
undefined variable $xyz is somehow referencing the ArrayObject subclass
Foo.
The same result occurs on Linux systems.
This came to light when using an unitialised value in the Zend Framework
Zend_Registry class, although it is not limited to that.
Test script:
---------------
<?php
class Foo extends ArrayObject{
public function __construct(){
parent::__construct(array(), parent::ARRAY_AS_PROPS);
}
}
$f = new Foo;
$f->Foo['bar'] = 1;
var_dump($xyz['xyz']); # This should throw a warning then null??
?>
Expected result:
----------------
PHP Notice: Undefined index: Foo in
C:\jirasource\ABC\sites\partners.rfp-gener
ator.com\web\test.html.php on line 8
PHP Stack trace:
PHP 1. {main}()
C:\jirasource\ABC\sites\partners.rfp-generator.com\web\test.ht
ml.php:0
Notice: Undefined index: Foo in
C:\jirasource\ABC\sites\partners.rfp-generator.
com\web\test.html.php on line 8
Call Stack:
0.0212 60112 1. {main}()
C:\jirasource\ABC\sites\partners.rfp-generat
or.com\web\test.html.php:0
PHP Notice: Undefined variable: xyz in
C:\jirasource\ABC\sites\partners.rfp-gen
erator.com\web\test.html.php on line 9
PHP Stack trace:
PHP 1. {main}()
C:\jirasource\ABC\sites\partners.rfp-generator.com\web\test.ht
ml.php:0
Notice: Undefined variable: xyz in
C:\jirasource\ABC\sites\partners.rfp-generato
r.com\web\test.html.php on line 9
Call Stack:
0.0212 60112 1. {main}()
C:\jirasource\ABC\sites\partners.rfp-generat
or.com\web\test.html.php:0
PHP Notice: Undefined index: xyz in
C:\jirasource\ABC\sites\partners.rfp-gener
ator.com\web\test.html.php on line 9
PHP Stack trace:
PHP 1. {main}()
C:\jirasource\ABC\sites\partners.rfp-generator.com\web\test.ht
ml.php:0
Notice: Undefined index: xyz in
C:\jirasource\ABC\sites\partners.rfp-generator.
com\web\test.html.php on line 9
Call Stack:
0.0212 60112 1. {main}()
C:\jirasource\ABC\sites\partners.rfp-generat
or.com\web\test.html.php:0
null
Actual result:
--------------
PHP Notice: Undefined index: Foo in
C:\jirasource\ABC\sites\partners.rfp-gener
ator.com\web\test.html.php on line 8
PHP Stack trace:
PHP 1. {main}()
C:\jirasource\ABC\sites\partners.rfp-generator.com\web\test.ht
ml.php:0
Notice: Undefined index: Foo in
C:\jirasource\ABC\sites\partners.rfp-generator.
com\web\test.html.php on line 8
Call Stack:
0.0212 60112 1. {main}()
C:\jirasource\ABC\sites\partners.rfp-generat
or.com\web\test.html.php:0
PHP Notice: Undefined variable: xyz in
C:\jirasource\ABC\sites\partners.rfp-gen
erator.com\web\test.html.php on line 9
PHP Stack trace:
PHP 1. {main}()
C:\jirasource\ABC\sites\partners.rfp-generator.com\web\test.ht
ml.php:0
Notice: Undefined variable: xyz in
C:\jirasource\ABC\sites\partners.rfp-generato
r.com\web\test.html.php on line 9
Call Stack:
0.0212 60112 1. {main}()
C:\jirasource\ABC\sites\partners.rfp-generat
or.com\web\test.html.php:0
PHP Notice: Undefined index: xyz in
C:\jirasource\ABC\sites\partners.rfp-gener
ator.com\web\test.html.php on line 9
PHP Stack trace:
PHP 1. {main}()
C:\jirasource\ABC\sites\partners.rfp-generator.com\web\test.ht
ml.php:0
Notice: Undefined index: xyz in
C:\jirasource\ABC\sites\partners.rfp-generator.
com\web\test.html.php on line 9
Call Stack:
0.0212 60112 1. {main}()
C:\jirasource\ABC\sites\partners.rfp-generat
or.com\web\test.html.php:0
array(1) {
["bar"]=>
int(1)
}
--
Edit bug report at http://bugs.php.net/bug.php?id=54984&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=54984&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=54984&r=trysnapshot53
Try a snapshot (trunk):
http://bugs.php.net/fix.php?id=54984&r=trysnapshottrunk
Fixed in SVN:
http://bugs.php.net/fix.php?id=54984&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=54984&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=54984&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=54984&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=54984&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=54984&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=54984&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=54984&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=54984&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=54984&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=54984&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=54984&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=54984&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=54984&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=54984&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=54984&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=54984&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=54984&r=mysqlcfg
