(PHP 5, PHP 7) Validates the document based on its DTD

(PHP 5, PHP 7) Adds new attribute node to element

(PHP 5, PHP 7) Adds a new child before a reference node

(PHP 5 >= 5.3.0, PHP 7) Register PHP functions as XPath functions

(PHP 5 >= 5.2.0, PHP 7) Canonicalize nodes to a file

(PHP 5, PHP 7) Create new entity reference node

(PHP 5, PHP 7) Creates a DOMDocument object of the specified type with its document element

(PHP 5, PHP 7) Dumps the internal document into a file using HTML formatting

(PHP 5, PHP 7) Creates a new DOMImplementation object

(PHP 5, PHP 7) Substitutes XIncludes in a DOMDocument Object