Introduction to Thinkphp 1 (45)

What is a framework?

It is a collection of codes, which can have variables, constants, functions, classes, etc. These codes are closely related to each other and have a cooperative relationship with each other. There are also design patterns in it: MVC, singleton, factory, etc.

Why learn framework?

1. All our energy can be focused on the business level, which can save about 60% of the workload

2. This function can help us build a program system quickly, stably and efficiently

3. System robustness and maintenance , flexibility, and adaptability to customer needs have been greatly enhanced

Mature framework

1 zendFramework: Official framework. Weight

2 Yii: OOP Weight

3 cakephp: Medium

4 symfony Weight

5 CodeIgniter Lightweight

6 ThinkPHP Lightweight

7 etc., and there are many unknown frameworks.

When to use a framework

1. Program projects have a lot of code and very complex functions.

2. The project time is very tight.

Application directory description

Project application

boke application directory description (a directory automatically created after the program is run)

Application entry file:

MVC design Mode

Entry program file

C: Controller controller

V: View view

M: Model model

Compile cache file ~ runtime.php

is a TP framework. For performance reasons, the system needs to be loaded Many files are compiled into one file, which is ~runtime.php. This saves the system a lot of overhead in opening and closing files.

Code tracking:

1. index.php entry

2. ThinkPHP.php

3. ThinkPHP/Common/runtime.php

4. Think::Start(); ThinkPHP/Lib/Core/Think. class.php

l Think::buildApp()

l App::run() ThinkPHP/Lib/Core/App.class.php

5 App::run()

l App::exec() ;

Use the reflection mechanism to instantiate the controller object and call the corresponding method

Note:

                              Our website resources such as css, js, img images, etc. need to be accessed separately.

Make web requests through routing

Template creation:

The controller calls the template to display the content:

1. Call the specific template through display()
2. Create the corresponding one under the Tpl directory creation Template file
3. Modify the css and img image directory addresses of the template file, and modify the css-style image address
4. Create css, img, and js constants in the entry file index.php for template use

Current entry file:

Summary:

1. Use the tp framework to create an application and make the entry file (go/index.php)
2. Create multiple controllers, refer to the index controller. All controllers inherit the Action parent class
3. Call the view template display() through the controller
4. Display the template content

Create the template under Tpl

Modify the directory address corresponding to css and img

The above introduces Getting Started with Thinkphp 1 (45), including all aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.