Suppose you're using the DOM setup and you have an attribute for an element, defined in the .dtd file with a default value. When parsing, how can you distinguish the situation where the .xml file did not have that attribute specified for that attribute, from the situation where the default value was specified explicitly?
The docs claim that DOMElement::getAttrNode returns The DOMAttr node with the specified name (nodeName) or null if there is no such attribute. However this does not seem to be true, unless by "there is no such attribute" they mean that there is no such attribute even in the .dtd file.
