DomNode->add_namespace

(PHP 4 >= 4.3.0)

DomNode->add_namespace — Adds a namespace declaration to a node

bool DOMNode::add_namespace ( string $uri , string $prefix )

This method adds a namespace declaration to a node.

Note:
This method is not part of the DOM specification.

成功时返回 TRUE，或者在失败时返回 FALSE.

You can set the namespace URI and prefix of a DOMElement or a DOMAttr at creation time by using DOMDocument::createElementNS or DOMDocument::createAttributeNS.

Note:
Remember the an attribute does not inherit its namespace from the element it is attached to.