Yes, of course PHP needs to parse the file to generate the Atom content, due to the way this Atom support was designed. And yes, it does work. But it's unlike what other software does and is confusing, I think, to users. What I'm asking, and maybe it's more of a PHP question, but is there a way to have PHP return the file as atom.xml after PHP has generated it? I suppose I could add xml to the suffixes that pass through the PHP parser (my HTML files now all are passed to PHP), and then just change the name of the file and the places that reference it. How are other apps doing this? Generating the file every umpteen minutes with a cronjob and saving it as a static file?