(PHP 5, PHP 7)
$exclusive
   [, bool $with_comments
   [, array $xpath
   [, array $ns_prefixes
  ]]]] )$uri
   [, bool $exclusive
   [, bool $with_comments
   [, array $xpath
   [, array $ns_prefixes
  ]]]] )Not implemented yet, always return NULL
The element name
Note:
The DOM extension uses UTF-8 encoding. Use utf8_encode() and utf8_decode() to work with texts in ISO-8859-1 encoding or Iconv for other encodings.