1、MYSQL数据库设计

-- 教师信息表
CREATE TABLE teachers (
    id INT AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(100) NOT NULL,
    phone VARCHAR(20),
    description TEXT
);

-- 课程表
CREATE TABLE courses (
    id INT AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(100) NOT NULL,
    teacher_id INT,
    FOREIGN KEY (teacher_id) REFERENCES teachers(id)
);

-- 用户信息表
CREATE TABLE users (
    id INT AUTO_INCREMENT PRIMARY KEY,
    openid VARCHAR(100) NOT NULL UNIQUE,
    phone VARCHAR(20) NOT NULL UNIQUE,
    username VARCHAR(100),
    email VARCHAR(100)
);

-- 用户课程表
CREATE TABLE user_courses (
    id INT AUTO_INCREMENT PRIMARY KEY,
    user_id INT,
    course_id INT,
    FOREIGN KEY (user_id) REFERENCES users(id),
    FOREIGN KEY (course_id) REFERENCES courses(id)
);

-- 课程详情表
CREATE TABLE course_details (
    id INT AUTO_INCREMENT PRIMARY KEY,
    course_id INT,
    description TEXT,
    duration VARCHAR(50),
    schedule VARCHAR(100),
    content TEXT,
    price DECIMAL(10, 2),
    FOREIGN KEY (course_id) REFERENCES courses(id)
);

2、PHP后端服务器