PHP를 사용하여 온라인 쇼핑몰 기능을 개발하는 방법

-- 创建商品表 CREATE TABLE products ( id INT AUTO_INCREMENT PRIMARY KEY, name VARCHAR(255) NOT NULL, price DECIMAL(10, 2) NOT NULL, description TEXT ); -- 创建订单表 CREATE TABLE orders ( id INT AUTO_INCREMENT PRIMARY KEY, user_id INT NOT NULL, amount DECIMAL(10, 2) NOT NULL, status ENUM('待支付', '已支付', '已取消') NOT NULL DEFAULT '待支付', created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP, FOREIGN KEY (user_id) REFERENCES users(id) ); -- 创建用户表 CREATE TABLE users ( id INT AUTO_INCREMENT PRIMARY KEY, name VARCHAR(255) NOT NULL, email VARCHAR(255) NOT NULL, password VARCHAR(255) NOT NULL );

query($sql); if ($result->num_rows > 0) { $products = array(); while($row = $result->fetch_assoc()) { $products[] = $row; } return $products; } else { return array(); } } // 添加商品 function addProduct($name, $price, $description) { $conn = connectToDatabase(); $name = mysqli_real_escape_string($conn, $name); $price = mysqli_real_escape_string($conn, $price); $description = mysqli_real_escape_string($conn, $description); $sql = "INSERT INTO products (name, price, description) VALUES ('$name', '$price', '$description')"; $result = $conn->query($sql); return $result; } // 编辑商品 function editProduct($id, $name, $price, $description) { $conn = connectToDatabase(); $name = mysqli_real_escape_string($conn, $name); $price = mysqli_real_escape_string($conn, $price); $description = mysqli_real_escape_string($conn, $description); $sql = "UPDATE products SET name='$name', price='$price', description='$description' WHERE id=$id"; $result = $conn->query($sql); return $result; } // 删除商品 function deleteProduct($id) { $conn = connectToDatabase(); $sql = "DELETE FROM products WHERE id=$id"; $result = $conn->query($sql); return $result; } ?>

query($sql); return $result; } // 查看订单 function getOrder($id) { $conn = connectToDatabase(); $sql = "SELECT * FROM orders WHERE id=$id"; $result = $conn->query($sql); if ($result->num_rows > 0) { return $result->fetch_assoc(); } else { return false; } } // 支付订单 function payOrder($id) { $conn = connectToDatabase(); $sql = "UPDATE orders SET status='已支付' WHERE id=$id"; $result = $conn->query($sql); return $result; } // 取消订单 function cancelOrder($id) { $conn = connectToDatabase(); $sql = "UPDATE orders SET status='已取消' WHERE id=$id"; $result = $conn->query($sql); return $result; } ?>

query($sql); return $result; } // 用户登录 function loginUser($email, $password) { $conn = connectToDatabase(); $email = mysqli_real_escape_string($conn, $email); $password = mysqli_real_escape_string($conn, $password); // 这里可以进行密码解密操作，例如：$password = md5($password); $sql = "SELECT * FROM users WHERE email='$email' AND password='$password'"; $result = $conn->query($sql); if ($result->num_rows > 0) { return $result->fetch_assoc(); } else { return false; } } // 退出登录 function logoutUser() { // 清除用户登录状态，例如：unset($_SESSION['user']); } ?>