From:             kurt at surfmerchants dot com
Operating system: Linux
PHP version:      5.2.5
PHP Bug Type:     Arrays related
Bug description:  Array keys being added when returning by reference

Description:
------------
When returning an array element from a function by reference, if the
element key does not exist, the element key is added.

Reproduce code:
---------------
class simple
{
        var $items = array();
        
        function &getItem($name)
        {
                return $this->items[$name];
        }
}

$obj = new simple();

print "Keys before getting item:\n".print_r(array_keys($obj->items),
TRUE)."\n";

$retrieved =& $obj->getItem('SHOULD_NOT_EXIST');

print "Retrieved: \n";
var_dump($retrieved);

print "Keys after getting item:\n".print_r(array_keys($obj->items),
TRUE)."\n";

Expected result:
----------------
Keys before getting item:
Array
(
)

Retrieved: 
NULL
Keys after getting item:
Array
(
)


Actual result:
--------------
Keys before getting item:
Array
(
)

Retrieved: 
NULL
Keys after getting item:
Array
(
    [0] => SHOULD_NOT_EXIST
)


-- 
Edit bug report at http://bugs.php.net/?id=44559&edit=1
-- 
Try a CVS snapshot (PHP 5.2): 
http://bugs.php.net/fix.php?id=44559&r=trysnapshot52
Try a CVS snapshot (PHP 5.3): 
http://bugs.php.net/fix.php?id=44559&r=trysnapshot53
Try a CVS snapshot (PHP 6.0): 
http://bugs.php.net/fix.php?id=44559&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=44559&r=fixedcvs
Fixed in release:             
http://bugs.php.net/fix.php?id=44559&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=44559&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=44559&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=44559&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=44559&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=44559&r=notwrong
Not enough info:              
http://bugs.php.net/fix.php?id=44559&r=notenoughinfo
Submitted twice:              
http://bugs.php.net/fix.php?id=44559&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=44559&r=globals
PHP 4 support discontinued:   http://bugs.php.net/fix.php?id=44559&r=php4
Daylight Savings:             http://bugs.php.net/fix.php?id=44559&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=44559&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=44559&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=44559&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=44559&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=44559&r=mysqlcfg

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