I have just set up my first proxy that uses phproxy. I am trying to add ads on the proxified pages. Where do i look?
You need to edit your template files ( stored in /templates/ or similar directory ). Add the code wherever you want and it will show up on your site.
If it does not help - forget about adding something to your script .. I said enough to figure out at least where you need to look ! I can't say you exactly what/where/how as I don't see your files .. before asking help, you need to know what you want