This function creates a new instance of class DOMAttr. Ez a csomópont nem fog látszani a dokumentumban mindaddig, amíg az be nem lesz illesztve, például a DOMNode->appendChild() által.
The URI of the namespace.
The tag name and prefix of the attribute, as prefix:tagname.
Raised if qualifiedName contains an invalid character.
Raised if qualifiedName is a malformed qualified name, or if qualifiedName has a prefix and namespaceURI is NULL.