(no version information, might be only in CVS)
DOMDocument->createAttributeNS -- Create new attribute node with an associated namespaceThis function returns a new instance of class DOMAttr. The tag name and prefix of the attribute is determined by the value of the passed parameter qualifiedName. The URI of the namespace is the value of namespaceURI. 本节点不会出现在文档中，除非是用例如 DOMNode->appendChild() 来插入的。
The return value is FALSE if an error occurred.
See also DOMDocument->createElementNS(), DOMNode->appendChild(), DOMDocument->createElement(), DOMDocument->createTextNode() and DOMDocument->createAttribute().