Here are a few more links to demo files that can be used as starting points when building web applications:

demo_shared: A singleton class based mysqli database (shared) connection application using the Customers table. Best starting point for a non-specific database enabled application

postback: A vanilla postback switch based application with no specific code other than submittal via POST. Use for building complex postback applications. Compare to demo_edit to see what this file can be used to create.

demo_list_pager: A "muffin" example that incorporates the Pager class into a list/view application. Best starting point for a List/View app

demo_add: A postback switch based application for adding new records to the Customers table.

demo_edit: A postback switch based application for editing existing records in the Customers table