Php & Directory structures

Heya, Can PHP count the number of a certain ftile in a directory and then print the result to the screen? I have articles on my site that are in XML/XSL format like: root/articles/00_head.xml 00_body.xml 01_head.xml 01_body.xml 02_head.xml 02_body.xml etc... (with appropriate XSL stylesheets too...) and I want to have a main "article page" with the head.xml info on it: Article 00: By: <author> Date: <whatever date> Subject: <subject> and then a link to the article itself (which will be an XSL stylesheet loading both the header info and the article body.xml). Can php count the number of articles etc in the dir and then automatically create the page? (or can anyone think of a better way of doing this???? :-)) Cheers, Martin