PHP is the mainstream web development language in the world today. It is famous for its fast development speed, simple and elegant syntax, and quick start. This set of courses explains the most basic requirements in PHP programs: variables and functions. It is completely different from the courses you have seen before. It is oriented to practical combat and developers. It allows you to bid farewell to obscure and boring syntax, and use it step by step. In the humorous teacher-student dialogue, you can quickly master the basic grammar of PHP.