1. Set up the environment and configure the virtual host; 2. PHP variables and functions, data types, process control, strings, arrays, classes and objects, PSR specifications; 3. Basic database operations, query technology, foreign keys, modeling paradigms 4. Form value transfer method, file upload; 5. File programming: classification of file operations, directory operations, file operations, and file downloads 6. Cookie principle and operation, Session principle and operation 7. Classes and objects: object implementation, encapsulation, inheritance, polymorphism, traversal, serialization, reflection mechanism, namespace, new Trait features 8. PDO extension PDO object, STMT preprocessing, PDO transaction processing, PDO exception handling, PDO attributes, encapsulated PDO class 9. MVC design pattern The principles of MVC design pattern, the creation principles of controllers, models and views, and building a custom MVC framework 10. Smarty template engine: Basic configuration of Smarty template engine, data binding, use of basic template tags and variable regulators