Creating a Car Sales and Inventory Store involves several components, including a MySQL database schema, file structure, layout design using Bootstrap 5, and complete PHP scripts for user authentication and management. Below is a comprehensive guide to help you set up your system.
Project Introduction
The Car Sales Inventory System is a web application designed to facilitate the management and sales of vehicles. This platform allows users to browse available cars, schedule test drives, and provide feedback on their experiences. Sales staff can manage car listings, track sales, and handle customer interactions efficiently. With a focus on user experience and streamlined operations, this system aims to enhance the car buying process for customers and improve inventory management for sales staff.
Project Objectives
- To develop a secure and user-friendly platform for managing car sales and inventory.
- To implement a comprehensive database schema that supports user management, car listings, sales tracking, and customer feedback.
- To provide functionalities for scheduling test drives and managing promotions effectively.
- To ensure a seamless payment process with multiple payment options for customers.
- To create a responsive design that enhances user experience across various devices.
- To facilitate customer feedback collection to improve service quality and customer satisfaction.
Project Modules
- User Management: Handles user registration, authentication, and role assignments (admin, sales staff, customer).
- Car Management: Allows sales staff to add, edit, and manage car listings, including details like make, model, and condition.
- Sales Management: Tracks sales transactions, including customer details, sale prices, and payment statuses.
- Customer Feedback: Collects ratings and comments from customers regarding their car purchase experiences.
- Test Drive Management: Facilitates scheduling and feedback collection for test drives.
- Promotions Management: Manages promotional offers and discounts on cars.
- Payment Processing: Handles payment transactions for car sales, including payment methods and statuses.
- Car Images Management: Allows the upload and management of images associated with car listings.
1. MySQL Database Schema
CREATE DATABASE car_sales_inventory;
USE car_sales_inventory;
-- Table for users
CREATE TABLE users (
id INT AUTO_INCREMENT PRIMARY KEY,
username VARCHAR(50) NOT NULL UNIQUE,
password VARCHAR(255) NOT NULL,
email VARCHAR(100) NOT NULL UNIQUE,
role ENUM('admin', 'sales_staff', 'customer') DEFAULT 'customer',
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);
-- Table for cars
CREATE TABLE cars (
id INT AUTO_INCREMENT PRIMARY KEY,
make VARCHAR(50) NOT NULL,
model VARCHAR(50) NOT NULL,
year INT NOT NULL,
price DECIMAL(10, 2) NOT NULL,
mileage INT NOT NULL,
condition ENUM('new', 'used', 'certified_pre_owned') DEFAULT 'used',
description TEXT,
stock_level INT NOT NULL,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP
);
-- Table for car images
CREATE TABLE car_images (
id INT AUTO_INCREMENT PRIMARY KEY,
car_id INT NOT NULL,
image_path VARCHAR(255) NOT NULL,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (car_id) REFERENCES cars(id) ON DELETE CASCADE
);
-- Table for sales
CREATE TABLE sales (
id INT AUTO_INCREMENT PRIMARY KEY,
car_id INT NOT NULL,
customer_id INT NOT NULL,
sale_date DATETIME NOT NULL,
sale_price DECIMAL(10, 2) NOT NULL,
payment_status ENUM('paid', 'pending', 'canceled') DEFAULT 'pending',
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (car_id) REFERENCES cars(id) ON DELETE CASCADE,
FOREIGN KEY (customer_id) REFERENCES users(id) ON DELETE CASCADE
);
-- Table for customer feedback
CREATE TABLE feedback (
id INT AUTO_INCREMENT PRIMARY KEY,
customer_id INT NOT NULL,
car_id INT NOT NULL,
rating INT CHECK (rating >= 1 AND rating <= 5),
comment TEXT,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (customer_id) REFERENCES users(id) ON DELETE CASCADE,
FOREIGN KEY (car_id) REFERENCES cars(id) ON DELETE CASCADE
);
-- Table for test drives
CREATE TABLE test_drives (
id INT AUTO_INCREMENT PRIMARY KEY,
car_id INT NOT NULL,
customer_id INT NOT NULL,
scheduled_date DATETIME NOT NULL,
feedback TEXT,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (car_id) REFERENCES cars(id) ON DELETE CASCADE,
FOREIGN KEY (customer_id) REFERENCES users(id) ON DELETE CASCADE
);
-- Table for promotions
CREATE TABLE promotions (
id INT AUTO_INCREMENT PRIMARY KEY,
car_id INT NOT NULL,
discount DECIMAL(5, 2) NOT NULL,
start_date DATE NOT NULL,
end_date DATE NOT NULL,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (car_id) REFERENCES cars(id) ON DELETE CASCADE
);
-- Table for payment transactions
CREATE TABLE payments (
id INT AUTO_INCREMENT PRIMARY KEY,
sale_id INT NOT NULL,
amount DECIMAL(10, 2) NOT NULL,
payment_date DATETIME NOT NULL,
payment_method ENUM('credit_card', 'bank_transfer', 'cash') NOT NULL,
created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (sale_id) REFERENCES sales(id) ON DELETE CASCADE
);
2. File and Folder Structure
car_sales_inventory_system/
│
├── config/
│ └── db.php
│
├── public/
│ ├── index.php
│ ├── login.php
│ ├── register.php
│ ├── dashboard.php
│ ├── create_car.php
│ ├── edit_car.php
│ ├── view_car.php
│ ├── bookings.php
│ ├── payments.php
│ ├── feedback.php
│ ├── test_drives.php
│ ├── promotions.php
│ └── admin_dashboard.php
│
├── includes/
│ ├── header.php
│ ├── footer.php
│ └── functions.php
│
├── assets/
│ ├── css/
│ │ └── styles.css
│ ├── js/
│ │ └── scripts.js
│ └── images/
│
└── vendor/
└── (Bootstrap and other libraries)
3. Layout Based Design with Bootstrap 5
Header (includes/header.php)
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet">
<link rel="stylesheet" href="assets/css/styles.css">
<title>Car Sales and Inventory System</title>
</head>
<body>
<div class="container">
<header class="my-4">
<h1>Car Sales and Inventory System</h1>
</header>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="index.php">Home</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNav">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link" href="create_car.php">Add Car</a>
</li>
<li class="nav-item">
<a class="nav-link" href="bookings.php">My Bookings</a>
</li>
<li class="nav-item">
<a class="nav-link" href="payments.php">Payments</a>
</li>
<li class="nav-item">
<a class="nav-link" href="feedback.php">Feedback</a>
</li>
<li class="nav-item">
<a class="nav-link" href="test_drives.php">Test Drives</a>
</li>
<li class="nav-item">
<a class="nav-link" href="promotions.php">Promotions</a>
</li>
<li class="nav-item">
<a class="nav-link" href="login.php">Login</a>
</li>
<li class="nav-item">
<a class="nav-link" href="register.php">Register</a>
</li>
</ul>
</div>
</div>
</nav>
<main class="my-4">
Footer (includes/footer.php)
</main>
<footer class="text-center my-4">
<p>© 2023 Car Sales and Inventory System. All rights reserved.</p>
</footer>
</div>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js"></script>
</body>
</html>
4. PHP Code for User Authentication
Registration (public/register.php)
<?php
require '../config/db.php';
require '../includes/header.php';
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$username = $_POST['username'];
$email = $_POST['email'];
$password = password_hash($_POST['password'], PASSWORD_DEFAULT);
$role = $_POST['role'];
$stmt = $conn->prepare("INSERT INTO users (username, email, password, role) VALUES (?, ?, ?, ?)");
$stmt->bind_param("ssss", $username, $email, $password, $role);
$stmt->execute();
$stmt->close();
header("Location: login.php");
}
?>
<form method="POST" action="">
<div class="mb-3">
<label for="username" class="form-label">Username</label>
<input type="text" class="form-control" id="username" name="username" required>
</div>
<div class="mb-3">
<label for="email" class="form-label">Email</label>
<input type="email" class="form-control" id="email" name="email" required>
</div>
<div class="mb-3">
<label for="password" class="form-label">Password</label>
<input type="password" class="form-control" id="password" name="password" required>
</div>
<div class="mb-3">
<label for="role" class="form-label">Role</label>
<select class="form-select" id="role" name="role">
<option value="customer">Customer</option>
<option value="bus_operator">Bus Operator</option>
<option value="admin">Admin</option>
</select>
</div>
<button type="submit" class="btn btn-primary">Register</button>
</form>
<?php require '../includes/footer.php'; ?>
Login (public/login.php)
<?php
session_start();
require '../config/db.php';
require '../includes/header.php';
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$username = $_POST['username'];
$password = $_POST['password'];
$stmt = $conn->prepare("SELECT * FROM users WHERE username = ?");
$stmt->bind_param("s", $username);
$stmt->execute();
$result = $stmt->get_result();
$user = $result->fetch_assoc();
if ($user && password_verify($password, $user['password'])) {
$_SESSION['user_id'] = $user['id'];
$_SESSION['role'] = $user['role'];
header("Location: dashboard.php");
} else {
echo "Invalid credentials.";
}
}
?>
<form method="POST" action="">
<div class="mb-3">
<label for="username" class="form-label">Username</label>
<input type="text" class="form-control" id="username" name="username" required>
</div>
<div class="mb-3">
<label for="password" class="form-label">Password</label>
<input type="password" class="form-control" id="password" name="password" required>
</div>
<button type="submit" class="btn btn-primary">Login</button>
</form>
<?php require '../includes/footer.php'; ?>
5. Additional PHP Scripts
Dashboard (public/dashboard.php)
<?php
session_start();
require '../config/db.php';
require '../includes/header.php';
if (!isset($_SESSION['user_id'])) {
header("Location: login.php");
exit();
}
$user_id = $_SESSION['user_id'];
$stmt = $conn->prepare("SELECT * FROM users WHERE id = ?");
$stmt->bind_param("i", $user_id);
$stmt->execute();
$result = $stmt->get_result();
$user = $result->fetch_assoc();
?>
<h2>Welcome, <?php echo $user['username']; ?></h2>
<p>Your role: <?php echo ucfirst($user['role']); ?></p>
<?php require '../includes/footer.php'; ?>
Car Management (public/car_management.php)
<?php
session_start();
require '../config/db.php';
require '../includes/header.php';
if (!isset($_SESSION['user_id']) || $_SESSION['role'] !== 'admin') {
header("Location: login.php");
exit();
}
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$title = $_POST['title'];
$description = $_POST['description'];
$price = $_POST['price'];
$location = $_POST['location'];
$property_type = $_POST['property_type'];
$stmt = $conn->prepare("INSERT INTO properties (title, description, price, location, property_type) VALUES (?, ?, ?, ?, ?)");
$stmt->bind_param("ssiss", $title, $description, $price, $location, $property_type);
$stmt->execute();
$stmt->close();
header("Location: car_management.php");
}
?>
<h2>Manage Cars</h2>
<form method="POST" action="">
<div class="mb-3">
<label for="title" class="form-label">Car Title</label>
<input type="text" class="form-control" id="title" name="title" required>
</div>
<div class="mb-3">
<label for="description" class="form-label">Description</label>
<textarea class="form-control" id="description" name="description" required></textarea>
</div>
<div class="mb-3">
<label for="price" class="form-label">Price</label>
<input type="number" class="form-control" id="price" name="price" required>
</div>
<div class="mb-3">
<label for="location" class="form-label">Location</label>
<input type="text" class="form-control" id="location" name="location" required>
</div>
<div class="mb-3">
<label for="property_type" class="form-label">Property Type</label>
<select class="form-select" id="property_type" name="property_type" required>
<option value="residential">Residential</option>
<option value="commercial">Commercial</option>
<option value="land">Land</option>
</select>
</div>
<button type="submit" class="btn btn-primary">Add Car</button>
</form>
<?php require '../includes/footer.php'; ?>
Booking Management (public/bookings.php)
<?php
session_start();
require '../config/db.php';
require '../includes/header.php';
if (!isset($_SESSION['user_id'])) {
header("Location: login.php");
exit();
}
$user_id = $_SESSION['user_id'];
$stmt = $conn->prepare("SELECT bookings.*, properties.title AS property_title FROM bookings JOIN properties ON bookings.property_id = properties.id WHERE bookings.buyer_id = ?");
$stmt->bind_param("i", $user_id);
$stmt->execute();
$result = $stmt->get_result();
$bookings = $result->fetch_all(MYSQLI_ASSOC);
?>
<h2>My Bookings</h2>
<table class="table">
<thead>
<tr>
<th>ID</th>
<th>Property</th>
<th>Booking Date</th>
<th>Status</th>
</tr>
</thead>
<tbody>
<?php foreach ($bookings as $booking): ?>
<tr>
<td><?php echo $booking['id']; ?></td>
<td><?php echo $booking['property_title']; ?></td>
<td><?php echo $booking['booking_date']; ?></td>
<td><?php echo ucfirst($booking['status']); ?></td>
</tr>
<?php endforeach; ?>
</tbody>
</table>
<?php require '../includes/footer.php'; ?>
Payment Management (public/payments.php)
<?php
session_start();
require '../config/db.php';
require '../includes/header.php';
if (!isset($_SESSION['user_id'])) {
header("Location: login.php");
exit();
}
$user_id = $_SESSION['user_id'];
$stmt = $conn->prepare("SELECT payments.*, bookings.id AS booking_id, properties.title AS property_title FROM payments JOIN bookings ON payments.booking_id = bookings.id JOIN properties ON bookings.property_id = properties.id WHERE bookings.buyer_id = ?");
$stmt->bind_param("i", $user_id);
$stmt->execute();
$result = $stmt->get_result();
$payments = $result->fetch_all(MYSQLI_ASSOC);
?>
<h2>My Payments</h2>
<table class="table">
<thead>
<tr>
<th>ID</th>
<th>Booking ID</th>
<th>Property</th>
<th>Amount</th>
<th>Status</th>
</tr>
</thead>
<tbody>
<?php foreach ($payments as $payment): ?>
<tr>
<td><?php echo $payment['id']; ?></td>
<td><?php echo $payment['booking_id']; ?></td>
<td><?php echo $payment['property_title']; ?></td>
<td><?php echo $payment['amount']; ?></td>
<td><?php echo ucfirst($payment['status']); ?></td>
</tr>
<?php endforeach; ?>
</tbody>
</table>
<?php require '../includes/footer.php'; ?>
Feedback Management (public/feedback.php)
<?php
session_start();
require '../config/db.php';
require '../includes/header.php';
if (!isset($_SESSION['user_id'])) {
header("Location: login.php");
exit();
}
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$property_id = $_POST['property_id'];
$user_id = $_SESSION['user_id'];
$rating = $_POST['rating'];
$comment = $_POST['comment'];
$stmt = $conn->prepare("INSERT INTO feedback (property_id, user_id, rating, comment) VALUES (?, ?, ?, ?)");
$stmt->bind_param("iiis", $property_id, $user_id, $rating, $comment);
$stmt->execute();
$stmt->close();
header("Location: feedback.php");
}
$stmt = $conn->prepare("SELECT * FROM properties");
$stmt->execute();
$result = $stmt->get_result();
$properties = $result->fetch_all(MYSQLI_ASSOC);
?>
<h2>Leave a Feedback</h2>
<form method="POST" action="">
<div class="mb-3">
<label for="property_id" class="form-label">Property</label>
<select class="form-select" id="property_id" name="property_id" required>
<?php foreach ($properties as $property): ?>
<option value="<?php echo $property['id']; ?>"><?php echo $property['title']; ?></option>
<?php endforeach; ?>
</select>
</div>
<div class="mb-3">
<label for="rating" class="form-label">Rating</label>
<select class="form-select" id="rating" name="rating" required>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
</select>
</div>
<div class="mb-3">
<label for="comment" class="form-label">Comment</label>
<textarea class="form-control" id="comment" name="comment" required></textarea>
</div>
<button type="submit" class="btn btn-primary">Submit Feedback</button>
</form>
<h3>Existing Feedback</h3>
<table class="table">
<thead>
<tr>
<th>Property</th>
<th>User</th>
<th>Rating</th>
<th>Comment</th>
</tr>
</thead>
<tbody>
<?php
$stmt = $conn->prepare("SELECT feedback.*, properties.title AS property_title, users.username AS user_name FROM feedback JOIN properties ON feedback.property_id = properties.id JOIN users ON feedback.user_id = users.id");
$stmt->execute();
$result = $stmt->get_result();
$feedbacks = $result->fetch_all(MYSQLI_ASSOC);
foreach ($feedbacks as $feedback): ?>
<tr>
<td><?php echo $feedback['property_title']; ?></td>
<td><?php echo $feedback['user_name']; ?></td>
<td><?php echo $feedback['rating']; ?></td>
<td><?php echo $feedback['comment']; ?></td>
</tr>
<?php endforeach; ?>
</tbody>
</table>
<?php require '../includes/footer.php'; ?>
6. Additional Features to Consider
User Profiles: Allow users to edit their profiles and manage their settings.
Advanced Search and Filtering: Implement more sophisticated search algorithms to enhance user experience.
Mobile Responsiveness: Ensure the application is fully responsive for mobile users.
7. Security Measures
Input Validation: Ensure all user inputs are validated to prevent SQL injection and XSS attacks.
Password Security: Use strong hashing algorithms for storing passwords.
Session Security: Implement secure session management practices to protect user sessions.
8. Testing and Deployment
Unit Testing: Conduct unit tests for individual components to ensure they function correctly.
Integration Testing: Test the integration of different modules to ensure they work together seamlessly.
Deployment: Choose a reliable hosting provider and deploy the application, ensuring all configurations are optimized for performance.
9. Documentation
User Documentation: Create a user manual to guide users through the platform's features and functionalities.
Developer Documentation: Document the codebase and architecture for future reference and maintenance.
10. Future Enhancements
AI-Powered Recommendations: Implement machine learning algorithms to provide personalized recommendations for users based on their preferences.
Community Features: Create forums or discussion boards for users to share insights and experiences related to car sales.
Integration with Other Systems: Consider integrating with existing CRM or marketing tools for a more comprehensive solution.
This structured approach will help you build a comprehensive Car Sales and Inventory System that meets user needs and adapts to future requirements.
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