Home Backend Development PHP Tutorial How to use CodeIgniter5 framework in php?

How to use CodeIgniter5 framework in php?

Jun 01, 2023 am 11:21 AM
php codeigniter frame

CodeIgniter is a lightweight PHP framework that adopts MVC architecture to support rapid development and simplify common tasks. CodeIgniter 5 is the latest version of the framework and offers many new features and improvements. This article will introduce how to use the CodeIgniter 5 framework to build a simple web application.

Step 1: Install CodeIgniter 5

Downloading and installing CodeIgniter 5 is very simple, just follow these steps:

  1. Download the latest version of CodeIgniter 5 from the official GitHub repository.
  2. Extract the downloaded archive and place the CodeIgniter directory in the root directory of the web server.
  3. Run the composer install command to download and install all dependencies.

Now that we have CodeIgniter 5 installed, let’s start creating a new application.

Step 2: Create a new application

Start the web browser and enter the following address: http://localhost/CodeIgniter-5/public/, the CodeIgniter welcome page will be displayed on the screen. This indicates that we have successfully installed the CodeIgniter framework.

Next, we need to create a new application. To do this, follow the steps below:

  1. Go to the CodeIgniter directory and then the applications directory.
  2. In the applications directory, create a new directory and give it an appropriate name. For example, my application name is "MyApp".
  3. In the newly created directory, create three subdirectories: controllers, views, and models.
  4. Create a new controller file in the controllers directory and name it Main.php. This is the default controller we will use.

Now that we have created our new application, we will write the code to define the controllers and views.

Step 3: Write the Controller Code

Open the Main.php file we created in the previous step and add the following PHP code:

<?php

namespace MyAppControllers;

use CodeIgniterController;

class Main extends Controller
{
    public function index()
    {
        $data = array('title' => '欢迎来到CodeIgniter 5!');
        return view('welcome_message', $data);
    }
}
Copy after login

This code will define a A controller named Main and inheriting it from CodeIgniter's base controller. The controller contains a method called index, which will render a view file called welcome_message and pass an array parameter called "$data".

Step 4: Write the view file

In our view directory, create a new PHP file named welcome_message.php. Then add the following code:

<!DOCTYPE html>
<html>
<head>
    <title><?= $title ?></title>
</head>
<body>
    <h1><?= $title ?></h1>

    <p>恭喜,你现在已经成功使用了CodeIgniter 5框架!</p>
</body>
</html>
Copy after login

This code will define a simple HTML page with a title and some text content. The title of the page will be obtained from the array parameter named "$data".

Step 5: Test the Application

Once we have defined the controller and view files, we can use CodeIgniter 5’s routing system to test our application. To test your application, follow these steps:

  1. Open the URL of the default controller we created in step 2. In our example, the URL would look like this: http://localhost/CodeIgniter-5/public/MyApp.
  2. If everything is fine, your web browser will load the view file we created in step 4, and it will display a title and some text content.

Congratulations, you have successfully created a simple web application using the CodeIgniter 5 framework.

Conclusion

This article introduces how to use the CodeIgniter 5 framework to create a simple web application. We learned how to install the CodeIgniter 5 framework, create a new application, and define controller and view files. The CodeIgniter framework is a very powerful and useful tool that can help us develop web applications quickly while also providing many different features and tools. If you want to learn more about the CodeIgniter framework, please visit the official documentation and community forums.

The above is the detailed content of How to use CodeIgniter5 framework in php?. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

CakePHP Project Configuration CakePHP Project Configuration Sep 10, 2024 pm 05:25 PM

In this chapter, we will understand the Environment Variables, General Configuration, Database Configuration and Email Configuration in CakePHP.

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

CakePHP Date and Time CakePHP Date and Time Sep 10, 2024 pm 05:27 PM

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

CakePHP File upload CakePHP File upload Sep 10, 2024 pm 05:27 PM

To work on file upload we are going to use the form helper. Here, is an example for file upload.

CakePHP Routing CakePHP Routing Sep 10, 2024 pm 05:25 PM

In this chapter, we are going to learn the following topics related to routing ?

Discuss CakePHP Discuss CakePHP Sep 10, 2024 pm 05:28 PM

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

CakePHP Creating Validators CakePHP Creating Validators Sep 10, 2024 pm 05:26 PM

Validator can be created by adding the following two lines in the controller.

See all articles