(PHP 5, PHP 7)
DOMImplementation::createDocument — Creates a DOMDocument object of the specified type with its document element
$namespaceURI = NULL
   [, string $qualifiedName = NULL
   [, DOMDocumentType $doctype = NULL
  ]]] )Creates a DOMDocument object of the specified type with its document element.
namespaceURIThe namespace URI of the document element to create.
qualifiedNameThe qualified name of the document element to create.
doctype
       The type of document to create or NULL.
      
   A new DOMDocument object. If 
   namespaceURI, qualifiedName, 
   and doctype are null, the returned 
   DOMDocument is empty with no document element
  
DOM_WRONG_DOCUMENT_ERR
       Raised if doctype has already been used with a 
       different document or was created from a different implementation.
      
DOM_NAMESPACE_ERR
       Raised if there is an error with the namespace, as determined by 
       namespaceURI and qualifiedName.
      
This method may be called statically, but will issue an E_STRICT error.