From:             t-bader at gmx dot net
Operating system: Windows Vista/7
PHP version:      5.3.1
PHP Bug Type:     Variables related
Bug description:  Incorrect initialization of $_SERVER

Description:
------------
The manual says that Superglobals can be referenced by variable variables
in global scope.

For the $_SERVER superglobal does this only work at it first "normal"
usage.

<?php
$Superglobal = '_SERVER';
var_dump($$Superglobal);
?> 

Outputs: NULL

But if i use the $_SERVER Variable after the var_dump(); the var_dump()s
output is correct:

<?php
$Superglobal = '_SERVER';
var_dump($$Superglobal);

$_SERVER;

var_dump($$Superglobal);
?> 

Both var_dump()s output the whole $_SERVER array. If i remove the line
with $_SERVER; both var_dump()s output is NULL.


Reproduce code:
---------------
<?php
$Superglobal = '_SERVER';
var_dump($$Superglobal);
?> 

Expected result:
----------------
Array containing the $_SERVER variables

Actual result:
--------------
NULL

-- 
Edit bug report at http://bugs.php.net/?id=50929&edit=1
-- 
Try a snapshot (PHP 5.2):            
http://bugs.php.net/fix.php?id=50929&r=trysnapshot52
Try a snapshot (PHP 5.3):            
http://bugs.php.net/fix.php?id=50929&r=trysnapshot53
Try a snapshot (PHP 6.0):            
http://bugs.php.net/fix.php?id=50929&r=trysnapshot60
Fixed in SVN:                        
http://bugs.php.net/fix.php?id=50929&r=fixed
Fixed in SVN and need be documented: 
http://bugs.php.net/fix.php?id=50929&r=needdocs
Fixed in release:                    
http://bugs.php.net/fix.php?id=50929&r=alreadyfixed
Need backtrace:                      
http://bugs.php.net/fix.php?id=50929&r=needtrace
Need Reproduce Script:               
http://bugs.php.net/fix.php?id=50929&r=needscript
Try newer version:                   
http://bugs.php.net/fix.php?id=50929&r=oldversion
Not developer issue:                 
http://bugs.php.net/fix.php?id=50929&r=support
Expected behavior:                   
http://bugs.php.net/fix.php?id=50929&r=notwrong
Not enough info:                     
http://bugs.php.net/fix.php?id=50929&r=notenoughinfo
Submitted twice:                     
http://bugs.php.net/fix.php?id=50929&r=submittedtwice
register_globals:                    
http://bugs.php.net/fix.php?id=50929&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=50929&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=50929&r=dst
IIS Stability:                       
http://bugs.php.net/fix.php?id=50929&r=isapi
Install GNU Sed:                     
http://bugs.php.net/fix.php?id=50929&r=gnused
Floating point limitations:          
http://bugs.php.net/fix.php?id=50929&r=float
No Zend Extensions:                  
http://bugs.php.net/fix.php?id=50929&r=nozend
MySQL Configuration Error:           
http://bugs.php.net/fix.php?id=50929&r=mysqlcfg

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