SEU On-line Sales System

Mark Davis

Senior BS in Computer Science

Overview

Idea behind the SEU On-line Sales System What is my solution? How did I go about implementing my solution. Problems I ran into. Testing Possible enhancements and future ideas. Questions?

Idea Behind the SEU On-line Sales System SEU lacking a unique On-Line Sales System.

Implementing a piece of software that caters to a small community of individuals.

Other universities…

What is my Solution?

Create a web based application that mimics an online message board program.

This “ebay” type application will present a way for students to virtually communicate with each other and post items to be bought and sold.

Implementing my Solution

Basic foundation Front end web application Back end database

Choosing a language Perl PHP ASP HTML

Choosing a database Microsoft Access MySQL

What I chose.. PHP, MySQL, & PHPmyAdmin

Implementing my Solution

Design Applications needed

User Friendly

Simple

Maintainability

Become a Member

Connecting to and Insert in the DB Connecting to the DB

<?php

$sql = mysql_pconnect('db01.cs.stedwards.edu', 'mdavis3', 'weiohg913a');

mysql_select_db('mdavis3', $sql) or die (mysql_error());

?>

Inserting into the DB$sql = mysql_query("INSERT INTO MEMBERS (first_name, last_name, phone_number, email_address, user_name, password) VALUES ('$_POST[first_name]', '$_POST[last_name]', '$_POST[phone_number]', '$_POST[email_address]', '$_POST[user_name]', '".md5($_POST[password])."') ");if(!$sql){ echo "Error Inserting Your Information Into DB: ".mysql_error(sql); footer(); exit();}else {include 'html/success.html';}

phpMyAdmin

Error Handling for Input

Login

Login Codesession_start();$validate = mysql_query("SELECT * FROM MEMBERS WHERE user_name= '{$_POST['user_name']}' AND password = md5('{$_POST['password']}')"); if(mysql_num_rows($validate) == 1){ while($row = mysql_fetch_assoc($validate)){ $_SESSION['login'] = true; $_SESSION['first_name'] = $row['first_name']; $_SESSION['last_name'] = $row['last_name']; $_SESSION['email_address'] = $row['email_address']; $_SESSION['user_name'] = $row['user_name']; $_SESSION['password'] = $row['password'];

myheader("Login Success!"); include 'html/loginsuccess.html'; footer(); } } else { myheader("Login Failed!"); echo '<p align="center">Login Failed</p>'; echo '<p align="center">Check Username and Password for Case Sensitivity.'; footer(); }

Posting Items

Design methods: What fields are needed?

How will these fields be used?

Posting Items

Viewing an Item

What will the user see?

How can an item be purchased?

How can an item be removed?

Item View

Item View

Image Handing

I Want To Purchase An Item

Email is sent to the seller email address.

Just wait!

I Want To Remove My Item

Unique removal of items

Remove query mysql_query("DELETE FROM

ITEM WHERE item_name = '{$_POST['item_name']}'") or die(mysql_error());

Problems I Ran Into

Uploading and displaying images

Starting and destroying sessions

Error handling for input forms

Testing

Alpha tested modules as they were created

Beta testing took place within a group of friends. LOTS OF CONSTRUCTIVE CRITISISM! A FEW SCENARIOS NOT ACCOUNTED FOR A GENERAL FEEL FOR THE SOFTWARE

Possible Enhancements and Future Ideas Display multiple images Implement time stamps for items. Develop a search tool for items. Get the software to the point where it could

be presented to the university for possible use.

Conclusion

What was my problem?

Did I find a solution?

Am I satisfied with my solution?

What now?

Questions?

This concludes my presentation