1) Registration of a new user. A new user should at least provide email, username, password, and confirm password during the sign-up process. Data validation must be provided (see below for requirements). If any data is invalid, display an error message. If all data are valid, register the user. Check if the username is available. Display an error message if the username is not available and provide a link back to the registration page so user can choose another username to complete the registration.
2) Then let the user login as an existing user with correct username and password. If the user enters incorrect username or password, display an error message and provide a link back to the login page so user can reenter the username and password.
3) Provide A main menu once the successful login. The main menu contains a database when you can
List records of database table that you can, Add records into the database, Searching for records in the database. Use a drop-down list for user to choose a field to search and a text field for user to enter the information of that field to search for, for example, in our book example, if a user chooses "author" in the drop-down list, then the text field allows the user to enter the author information to look up; if a user chooses "title" in the drop-down list, then the text field allows the user to enter the title information to look up. Also deleting records from the database. You have two ways to do this. The first approach is you can modify book examples to list all records and provide "Delete Record" button for each record. Another approach is you can allow user to search for a record and delete it if the record exists and the user confirms to delete it.
Lastly let the user Log out, and return to the basic main menu.
Keep track of the user data who registers to the site with phpmyadmin.