Invoice System using PHP/OOP Free Source Code

Introduction

This is a PHP project that I'd developed called Invoice System. This is a simple OOP PHP project that can help some companies to manage their invoices. The system handles invoices for both selling products and services. This system can help other programmers especially those who are new to PHP language to learn some techniques and understand how to build an Invoice System in the said programming language.

About the Invoice System

The Invoice System was developed using PHP/OOP, MySQL Database, HTML5, CSS, Javascript (jQuery and Ajax), and Bootstrap. The system stores the list of categories, products, services, and invoices. The invoices that will be store or generated in this system has 2 types which are the product invoice and service invoice. The system automatically generates a random invoice code but also editable and has a validation to check the code availability. After the invoice is saved, then a new window will pop up that contains the printable generated invoice. The dashboard displays the summary of the list stored inside the database. When listing the items of products or services in creating an invoice, the system has error trapping features to prevent human errors to result in system errors.

Features

• Secure Login
• Home Page/Dashboard
• Manage Category
• Manage Product
• Manage Service
• Create Invoice
• Update Invoice
• Print Invoice
• Delete Invoice
• Autogenerates Invoice Code
• Validates Invoice Code
• Error Trapping

System Snapshots

The source code is free to download on this website. Feel free to download and modify the source code the way you desire. This project was developed only for educational purposes only.

How to Run

Requirements

• Download and Install any local web server such as XAMPP/WAMP.
• Download the provided source code zip file. (download button is located below)

Installation/Setup

1. Open your XAMPP/WAMP's Control Panel and start the Apache and MySQL.
2. Extract the downloaded source code zip file.
3. If you are using XAMPP, copy the extracted source code folder and paste it into the XAMPP's "htdocs" directory. And If you are using WAMP, paste it into the "www" directory.
4. Browse the PHPMyAdmin in a browser. i.e. http://localhost/phpmyadmin
5. Create a new database naming invoice_db.
6. Import the provided SQL file. The file is known as invoice_db.sql located inside the database folder.
7. Browse the Invoice System in a browser. i.e. http://localhost/simple_invoice

Access Information:

Username: admin
Password: admin123

DEMO

That's it! I hope this Invoice System in PHP/OOP and MySQL Database that I have created will help you with what you are looking for and you'll find something useful for your future projects.

Explore more on this website for more Free Source Codes and Tutorials.

Enjoy :)