On Builder.au, there's a new tutorial talking about the dynamic construction of an XML document using the DOM functionality already built into most PHP installs out there.

They work through the different steps:

• Creating the Doctype declaration
• Adding elements and text nodes
• Adding attributes
• Adding CDATA blocks and processing instructions
• Saving the results

For each on the list, there's code and explanation to help you create the document. By the end, you'll have a document that gives you all the information you'd want to know about someone's pizza order.