1-1 Introduction to CI and MVC design pattern

1-2 Controller in CI

1-3 View in CI

1-4 load loader in CI super object

1-5 uri in CI super object

1-6 input input class in CI super object

1-7 Database operations in CI(1)

1-8 Database operations in CI (2)

1-9 AR in CI (database addition, deletion, modification, query)

1-10 AR (continuous operation) in CI

1-11 Extend CI controller

1-12 model in CI

1-13 url related functions in CI

1-14 Routing, pseudo-static and hidden index.php entry files in CI

1-15 Pagination in CI

1-16 File upload in CI

1-17 Session in CI

1-18 Verification code in CI

1-19 Form validation in CI