Why learn object-oriented? What can you do after studying?

What is object-oriented? What is a class?

Operations, access control, pseudo variables, constructors and destructors of class members

Static class members and class constants

Three major characteristics of classes: encapsulation, inheritance and polymorphism

Class inheritance: Trait class, abstract class, interface class and Final keyword

Class loading, object traversal and magic methods

Database operation class - realizes database connection, addition, deletion, modification and query of data information

User verification class - implements user registration, user login, and logout

List paging class-implement data paging display

Data search function class, enabling search on the basis of paging

Student management system project design and implementation process