(no version information, might be only in CVS)
DomNode->set_namespace -- 
   Sets namespace of a node
  
Description
void 
DomNode->set_namespace ( string uri [, string prefix] )
   Sets the namespace of a node to uri.
   If there is already a namespace declaration with the same uri in one of the parent nodes
   of the node, the prefix of this is taken, otherwise it will take the one provided 
   in the optional parameter prefix or generate a random one.
  
   See also domdocument_create_element_ns(), and
   domnode_add_namespace()