DomNode->add_namespace Adds a namespace declaration to a node &reftitle.description; DOMNode booladd_namespace stringuri stringprefix This method adds a namespace declaration to a node. This method is not part of the DOM specification. &reftitle.parameters; uri The namespace URI of the node. prefix The namespace prefix of the node. &reftitle.returnvalues; &return.success; You can set the namespace URI and prefix of a DOMElement or a DOMAttr at creation time by using or . Remember the an attribute does not inherit its namespace from the element it is attached to. &reftitle.seealso;