How to use Kohana framework in php?

How does PHP use the Kohana framework?

Kohana is a PHP framework based on MVC architecture, evolved from the original CodeIgniter framework. Its philosophy is simplicity, flexibility and elegance. The Kohana framework provides rich functionality and good reusability, making it the first choice for many PHP developers.

So, how to use the Kohana framework? Here we briefly introduce how to install and use the Kohana framework.

Installation

First, we need to download the latest version of the Kohana framework from the Kohana official website https://kohanaframework.org/, unzip it and put it into our PHP project directory.

In the root directory of the project, find the application directory. This directory is the core of our application, and all your own code should be placed in subdirectories under this directory, such as controllers, models, views, etc.

Configuration

In the application directory, find the config directory and open the configuration file database.php in it. In this file, we can set the database we need to connect to, as well as database account and password information. Before doing this, make sure you have installed a database, such as MySQL.

In the same directory, there is also a file bootstrap.php, which is the entry file for Kohana framework initialization. It loads the class library files required by the framework, registers automatic loading, exception handling and other global configurations.

Routing

The framework uses the router mechanism by default. Routing rules can be configured in the bootstrap.php file in the application directory, or routing rules can be defined in each controller.

The router determines which controller and method to use based on the web application's requests. These requests and the rules for how to handle them can be configured when defining the route.

Controller

Kohana's controller naming method uses multiple words separated by "_" and is prefixed with Controller_. The controller file should be located in the controllers subdirectory of the application directory, such as application/controllers/welcome.php.

In this file, define a class (such as class Controller_Welcome), and then define each method in the class. For example, define a method index to handle web requests, which defines how to process and display content.

Model

The framework supports a variety of ORM (Object-Relational Mapping) tools for mapping data in the database to PHP objects. Common ORM tools include Doctrine, Propel, and Eloquent.

View

View is the View in MVC mode, used to render templates and display user interfaces. The Kohana framework uses views to display HTML pages. In the view, various elements and data in the HTML page are defined so that the browser can render them.

Kohana's views can use PHP as the template language and also support other template engines, such as Twig.

Summary

Kohana is a lightweight, simple and easy-to-use PHP framework, suitable for the development of small and medium-sized web applications. When learning the Kohana framework, you need to master its installation, configuration, routing, controllers, models and views. With this knowledge, web applications can be developed more efficiently and elegantly.

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