From:             mamay55 at gmail dot com
Operating system: Linux/Windows
PHP version:      5.2.1
PHP Bug Type:     Arrays related
Bug description:  Returning unset array key by reference sets it to null

Description:
------------
Whenever a function (global or class method) returns a reference to an
array element which is not set, the value of that element is set to null.

Reproduce code:
---------------
 $data = array();


 function &get_data($key) {
     global $data;
     return $data[$key];
 }

 print_r($data);
 $result = &get_data('TEST');
 echo $result;
 print_r($data);


Expected result:
----------------
The expected result would be that the value of the unset element would not
be set and the following warning would be produced:
Undefined index:  TEST in ...

Actual result:
--------------
Array
(
)
Array
(
    [TEST] =>
)


-- 
Edit bug report at http://bugs.php.net/?id=40959&edit=1
-- 
Try a CVS snapshot (PHP 4.4): 
http://bugs.php.net/fix.php?id=40959&r=trysnapshot44
Try a CVS snapshot (PHP 5.2): 
http://bugs.php.net/fix.php?id=40959&r=trysnapshot52
Try a CVS snapshot (PHP 6.0): 
http://bugs.php.net/fix.php?id=40959&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=40959&r=fixedcvs
Fixed in release:             
http://bugs.php.net/fix.php?id=40959&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=40959&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=40959&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=40959&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=40959&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=40959&r=notwrong
Not enough info:              
http://bugs.php.net/fix.php?id=40959&r=notenoughinfo
Submitted twice:              
http://bugs.php.net/fix.php?id=40959&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=40959&r=globals
PHP 3 support discontinued:   http://bugs.php.net/fix.php?id=40959&r=php3
Daylight Savings:             http://bugs.php.net/fix.php?id=40959&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=40959&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=40959&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=40959&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=40959&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=40959&r=mysqlcfg

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