Invoice Management System

A comprehensive PHP-based billing and invoice management system with MySQL database.

Features

• Client Management - Add, edit, and manage clients
• Invoice Creation - Create professional invoices with line items
• PDF Generation - Export invoices to PDF format
• Payment Tracking - Track paid, pending, and overdue invoices
• Dashboard - Overview of business metrics
• Reports - Generate financial reports
• Email Notifications - Send invoices via email

Tech Stack

Requirements

• PHP 7.4 or higher
• MySQL 5.7 or higher
• Composer (for dependencies)

Installation

1. Clone the repository

git clone https://github.com/kule-code/invoice-system.git
cd invoice-system

2. Import database schema

mysql -u root -p < database/invoice_system.sql

3. Configure database in config/database.php

define('DB_HOST', 'localhost');
define('DB_NAME', 'invoice_system');
define('DB_USER', 'root');
define('DB_PASS', 'your_password');

4. Start PHP server

php -S localhost:8000

5. Open http://localhost:8000 in your browser

Project Structure

invoice-system/
├── config/
│   └── database.php
├── classes/
│   ├── Client.php
│   ├── Invoice.php
│   └── InvoiceItem.php
├── database/
│   └── invoice_system.sql
├── includes/
│   ├── header.php
│   └── footer.php
├── css/
│   └── style.css
├── js/
│   └── script.js
├── pages/
│   ├── clients/
│   ├── invoices/
│   └── reports/
├── index.php
└── README.md

Screenshots

Coming soon...

License

MIT License

Author

kule-code