XML and XSLT technologies provides standard ways of separation of presentation and data. This article contains an example of simple php "xslt engine" for XML driven web-sites which implements caching techniques and Apache-based XML file processing.

They start by setting up the web server to parse all XML file requests through a handler script using Apache's directives. Following thi ssetup, there's three code blocks, one for each of the "moving parts" of the sample application - the XML content, the XSLT template to style it, and the PHP to bring them both together.