From:             
Operating system: Ubuntu maverick
PHP version:      5.3.3
Package:          DOM XML related
Bug Type:         Bug
Bug description:lookupNamespaceURI returns nothing

Description:
------------
Hopefully this is something that's fairly easy to see in the code.
Providing a 

full working code sample will be somewhat difficult. This seems to happen
most 

frequently with nodes that have been removed from the dom and added back 

elsewhere.



Basically if I call lookupNamespace on a node I'm getting nothing back. If
I load 

the node into SimpleXML and call getNamespaces I'm getting the namespace as


expected.



The attached code is a workaround for the problem.

Test script:
---------------
  private function get_namespace($node) {

        $node_namespace = $node->lookupNamespaceURI($node->prefix);

        if($node instanceof DomElement && $node_namespace == null &&
strpos($node->nodeName, ":") !== false) {

            // must be some sort of DOM bug. Look and see if we can figure
it out from simplexml

            $sxe = simplexml_import_dom($node);

            $namespaces = $sxe->getNamespaces();

            foreach($namespaces as $prefix => $namespace) {

                if(strpos($node->nodeName, $prefix . ":") == 0) {

                    $node_namespace = $namespace;

                    break;

                }

            }

        }

        return $nodeNamespace;

    }



Expected result:
----------------
I expect that if I get into the body of the if statement that I will return
a 

null $node_namespace. Preferably I'd never get into the if statement.


-- 
Edit bug report at http://bugs.php.net/bug.php?id=52661&edit=1
-- 
Try a snapshot (PHP 5.2):            
http://bugs.php.net/fix.php?id=52661&r=trysnapshot52
Try a snapshot (PHP 5.3):            
http://bugs.php.net/fix.php?id=52661&r=trysnapshot53
Try a snapshot (trunk):              
http://bugs.php.net/fix.php?id=52661&r=trysnapshottrunk
Fixed in SVN:                        
http://bugs.php.net/fix.php?id=52661&r=fixed
Fixed in SVN and need be documented: 
http://bugs.php.net/fix.php?id=52661&r=needdocs
Fixed in release:                    
http://bugs.php.net/fix.php?id=52661&r=alreadyfixed
Need backtrace:                      
http://bugs.php.net/fix.php?id=52661&r=needtrace
Need Reproduce Script:               
http://bugs.php.net/fix.php?id=52661&r=needscript
Try newer version:                   
http://bugs.php.net/fix.php?id=52661&r=oldversion
Not developer issue:                 
http://bugs.php.net/fix.php?id=52661&r=support
Expected behavior:                   
http://bugs.php.net/fix.php?id=52661&r=notwrong
Not enough info:                     
http://bugs.php.net/fix.php?id=52661&r=notenoughinfo
Submitted twice:                     
http://bugs.php.net/fix.php?id=52661&r=submittedtwice
register_globals:                    
http://bugs.php.net/fix.php?id=52661&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=52661&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=52661&r=dst
IIS Stability:                       
http://bugs.php.net/fix.php?id=52661&r=isapi
Install GNU Sed:                     
http://bugs.php.net/fix.php?id=52661&r=gnused
Floating point limitations:          
http://bugs.php.net/fix.php?id=52661&r=float
No Zend Extensions:                  
http://bugs.php.net/fix.php?id=52661&r=nozend
MySQL Configuration Error:           
http://bugs.php.net/fix.php?id=52661&r=mysqlcfg

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