Shulou(Shulou.com)05/31 Report--

This article mainly introduces "what is the running process of PHP CodeIgniter". In the daily operation, I believe that many people have doubts about the running process of PHP CodeIgniter. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "what is the running process of PHP CodeIgniter?" Next, please follow the editor to study!

1.MVC mode description

MVC pattern (Model-view-controller) is a software architecture pattern in software engineering, which divides the software system into three basic parts: Model, View and Controller.

Model (Model): the functions that programmers should have in writing programs (implementing algorithms, etc.), database experts for data management and database design (can achieve specific functions)

Controller (Controller): responsible for forwarding requests and processing requests

View (View): interface designers design graphical interfaces.

two。 Running process

(1) index.php, as the front-end controller, initializes the basic resources needed to run CI.

(2) router examines the http request to determine how to handle the request

(3) if there is a cache file, it will be output directly to the browser without going through the later process.

(4) check the security of http requests and data submitted by any user before loading the controller

(5) load models, core class libraries, auxiliary functions and resources needed to process requests

(6) finally, load the view and send it to the browser. If caching is enabled, the view will be cached first for subsequent requests.

What are the characteristics of php 1, the execution speed is fast.

2. It has good openness and expansibility.

3. PHP supports a variety of mainstream and non-mainstream databases.

Object-oriented programming: PHP provides classes and objects.

5. The update speed of the version is fast.

6. It has rich functions.

7. Scalability.

8. Comprehensive functions, including graphics processing, encoding and decoding, compressed file processing, xml analysis and so on.

At this point, the study on "what is the running process of PHP CodeIgniter" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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