Anas Jaghoub

In this lesson I’m going to illustrate the system definition and requirements for the Guest Book application. It is an important step in developing any application, since this step gives us an orientation about the system and its functionality, what is expected from the system to do. actually the system definition comes from keywords from customers and end users, usually try to make it clear for what they need in the application, and what they expect the system to do.  As developers it is our role to define the requirements for the system to be developed. In our example the system definition for the Guest Book is: A system that allows visitors of the site to post their comments and feedbacks about the site, with the possibility for managing comments and maintain it easily and user friendly. On the other hand, the system requirements are: a web server, since it is clear that the developed system is going to run on the Internet, so it is a web-based application not windows-based.

Dear followers of the PHP Tutorial, hope you all enjoyed the PHP, and got benefits from this simple tutorial. As I promised you before, the next series of the PHP Tutorial focus on developing web-based applications using PHP. To make the development more useful and close to real world applications, we need to focus on the user interface, and cover aspects related to it, so we moved for two short tutorials that covers the User Interface aspects using XHTML and CSS, and learned the basics for developing a cross browser compatible pages, and how to apply standards in developing the web page. From Now on, we are going to develop our first we application in this tutorial, which is a guest book, that allow users to post comments and there’ll be a simple admin panel to manage the comments. The development for the Guest Book goes on these steps: 1. System definition and requirements. 2. Analysis and design for the database (Includes implementing the database). 3. Implementing the system