PHP and MySQL Web Development 4th Ed-tqw-_darksiderg

612 Chapter 28 Building a Shopping Cart
Table 28.1
Continued
Name Module Description
edit_book_form.php Administration Form to let administrators edit a book’s
details.
edit_book.php Administration Script that updates a book in the database.
delete_category.php Administration Script that deletes a category from the
database.
delete_book.php Administration Script that deletes a book from the database.
book_sc_fns.php Functions Collection of include files for this application.
admin_fns.php Functions Collection of functions used by administrative
scripts.
book_fns.php Functions Collection of functions for storing and
retrieving book data.
order_fns.php Functions Collection of functions for storing and
retrieving order data.
output_fns.php Functions Collection of functions for outputting
HTML.
data_valid_fns.php Functions Collection of functions for validating
input data.
db_fns.php Functions Collection of functions for connecting to
the book_sc database.
user_auth_fns.php Functions Collection of functions for authenticating
administrative users.
book_sc.sql SQL SQL to set up the book_sc database.
populate.sql SQL SQL to insert some sample data into the
book_sc database.
Now, let’s look at the implementation of each of the modules.
Note
This application contains a lot of code. Much of it implements functionality you have looked at already (particularly
in Chapter 27), such as storing data to and retrieving it from the database, and authenticating the
administrative user. We look briefly at this code but spend most of our time on the shopping cart functions.
Implementing the Database
As we mentioned earlier, we made some minor modifications to the Book-O-Rama
database presented in Part II.The SQL to create the book_sc database is shown in
Listing 28.1.