Re: Making SimpleXML more useful

> > $sxe->addChild('child', 123); # Adds element with namespace > > inherited from the parent > > $sxe->addChild('child', 123, 'urn:somenamespace'); # Adds child > > with specified namespace > > $sxe->addChild('child', 123, -1); # Adds child with no namespace > > qualification > > Again, there is no problem here as <child xmlns="">123</child> is > unqualified Specifying the "xmlns" pseudo-attribute *is* namespace qualification. Qualification is the act of specifying a namespace. And there is a difference between no namespace (xmlns="") and the default namespace. The XML document: <parent xmlns="urn:something"> <child xmlns="">123</child> </parent> and: <parent xmlns="urn:something"> <child>123</child> </parent> are different documents. In the first case, the <child> element is not in any namespace, and in the later, the <child> element is in the default namespace. Ben Schmidt mentioned this in an earlier response. XMLSchema's can further specify the structure of XML documents beyond what is in the XMLNamespace spec, including requiring that elements be unqualified and specifying a target namespace for the unqualified elements. An XML document structure defined by an XMLSchema really only has one correct form. Tom