writing to file quick and easy.

Hello: Lookin for a little advice here. I have a series of scripts that dynamically create web pages. The last page in the series I wish to be able to write out to a file. Is there a simple/quick way in which I can take the process(ing) script and write it to a file at the same time that it is displaying? I need it to both display and be able to be downloaded such that the last thing that this script would do is create a link to itself in html format. Something to the effect that whatever was being passed to the browser could also be passed thru an open file handle thus written to a file???? Thanks, Christopher C. M. Allen