Bug #54984 [Opn->Wfx]: ArrayObject creates invalid variable reference

Edit report at http://bugs.php.net/bug.php?id=54984&edit=1 ID: 54984 Updated by: felipe@php.net Reported by: pwharman at gmail dot com Summary: ArrayObject creates invalid variable reference -Status: Open +Status: Wont fix Type: Bug Package: SPL related Operating System: Windows/Linux PHP Version: 5.2.17 Block user comment: N Private report: N New Comment: Since 5.2.x is not a maintained version, consider using 5.3. :) Previous Comments: ------------------------------------------------------------------------ [2011-06-04 13:50:16] pwharman at gmail dot com I agree it makes no sense! I have just retested using PHP 5.3.6 and can not reproduce this, it seems limited to 5.2.x. I have just ran the script against 5.2.17 and can confirm the problem exists. ------------------------------------------------------------------------ [2011-06-04 01:25:07] felipe@php.net This makes no sense, Are you reproducing it just with this posted test script?! ------------------------------------------------------------------------ [2011-06-03 12:49:42] pwharman at gmail dot com 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 this bug report at http://bugs.php.net/bug.php?id=54984&edit=1