MattyMoose - 5:24 am on Dec 8, 2007 (gmt 0)

The easiest would actually be to look through your Apache site logs, I would say... Trying to 'catch' a file request to your php file would be hard to do, since Apache (via mod_php) won't keep your .php file open the whole time, only to read it, then it parses it in memory.