Maybe configure your browser to open files of type php with program php5-cli?
If a web server has php pages, they should usually execute in the server, and the client should only get "the results". Though if you insist on grabbing a php file and executing it yourself, you can do so but you then have to tell the program that opens the php file which program it should use to execute it. If your browser doesn't know about php files, it just "sees" it's a plaintext file and the two usual things to do with such files are to view them, or save the file to disk.
Last edited by b0uncer; 05-24-2008 at 04:12 AM.