pass output of php scripts through command line program or cgi

Hi, I want to run the output of all the php scripts running on my apache server through a command line or CGI program. I do not want to modify any of the php scripts.Has anyone done this? Is this possible? For example (this is a stupid example and I am not using it for this): The output of "index.php" is: <html> ... </table> </body> </html> then that output is run through "addfooter" (a command line script) which results in: <html> ... </table> <br/><b>The footer is inserted here.</b> </body> </html> Then apache outputs the above html. Any ideas? Thanks Paul -- .''`. Paul William : :' : Debian admin and user . '` `- Debian - when you have better things to do than fixing a system