And again, if a user has somehow loaded this page without any posted variables, he or she is immediately redirected to the home page. } else { redirect( index.php ); } User Interface So you ve created your transaction pages, and your reusable functions, but haven t yet actually seen any real on-screen functionality. Well now s your chance! In this section, we re going to be creating the scripts that make up the various user interface screens. Dust off your browser, and let s get started! General Functionality The first group of files you ll be dealing with are going to provide general user access to the site. Scripts similar to these are found on many sites across the Internet, so you ll probably be familiar with their functionality. Try It Out Main Index/Login Screen The first scripts you re going to create will deal with the action of a user coming to the site, logging in, requesting aide due to a forgotten password, and new account creation. 1. Create login.php: