From:             [EMAIL PROTECTED]
Operating system: Gentoo
PHP version:      5.2.6
PHP Bug Type:     SPL related
Bug description:  ArrayObject does not allow empty strings as keys

Description:
------------
While '' works as an array key, it does not work with ArrayObject. It
should either work both or none (first one preferred).

Reproduce code:
---------------
php > $foo = new ArrayObject();
php > $foo[''] = 'lala';
PHP Fatal error:  Uncaught exception 'InvalidArgumentException' with
message 'An offset must not begin with \0 or be empty' in php shell code:1
Stack trace:
#0 php shell code(1): unknown()
#1 {main}
  thrown in php shell code on line 1

InvalidArgumentException: An offset must not begin with \0 or be empty in
php shell code on line 1

Call Stack:
   16.7554      63916   1. {main}() php shell code:0

Expected result:
----------------
Same as for arrays.

php > $foo = array();
php > $foo[''] = 'lala';
php > var_dump($foo);
array(1) {
  [""]=>
  string(4) "lala"
}


Actual result:
--------------
PHP Fatal error:  Uncaught exception 'InvalidArgumentException' with
message 'An offset must not begin with \0 or be empty' in php shell code:1
Stack trace:
#0 php shell code(1): unknown()
#1 {main}
  thrown in php shell code on line 1

InvalidArgumentException: An offset must not begin with \0 or be empty in
php shell code on line 1

Call Stack:
   16.7554      63916   1. {main}() php shell code:0

-- 
Edit bug report at http://bugs.php.net/?id=45820&edit=1
-- 
Try a CVS snapshot (PHP 5.2): 
http://bugs.php.net/fix.php?id=45820&r=trysnapshot52
Try a CVS snapshot (PHP 5.3): 
http://bugs.php.net/fix.php?id=45820&r=trysnapshot53
Try a CVS snapshot (PHP 6.0): 
http://bugs.php.net/fix.php?id=45820&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=45820&r=fixedcvs
Fixed in release:             
http://bugs.php.net/fix.php?id=45820&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=45820&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=45820&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=45820&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=45820&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=45820&r=notwrong
Not enough info:              
http://bugs.php.net/fix.php?id=45820&r=notenoughinfo
Submitted twice:              
http://bugs.php.net/fix.php?id=45820&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=45820&r=globals
PHP 4 support discontinued:   http://bugs.php.net/fix.php?id=45820&r=php4
Daylight Savings:             http://bugs.php.net/fix.php?id=45820&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=45820&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=45820&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=45820&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=45820&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=45820&r=mysqlcfg

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