I have four PHP programs. Program A currently calls Program B, Program C, or Program D (via html). What’s the best way to build the project so that the user only sees one exe program load regardless of which program is called? Do I have to place all into one php file then compile? Or can I compile each program separately and call B, C, or D from A? If possible, an example project would be appreciated. Not completely sure how to handle the setup, calls, etc. Thanks.