Course Content
Introduction to CodeIgniter 4
CodeIgniter is an Application Development Framework. CodeIgniter is a popular and powerful MVC (Model-View-Controller) framework that is used to develop web applications. It is a free and Open-source PHP framework.
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MVC (Model-View-Controller)
MVC stands for Model-View-Controller. MVC is an application design model consisting of three interconnected parts. They include the model (data), the view (user interface), and the controller (processes that handle input).
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Sessions
The Session class allows you to maintain a user’s "state" and track their activity while they browse your site.
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URI Routing
There is a one-to-one relationship between a URL string and its corresponding controller class/method.
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Working with Database
Like any other framework, we need to interact with the database very often and CodeIgniter makes this job easy for us. It provides a rich set of functionalities to interact with the database.
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Spreadsheet
PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. Importing Excel and CSV into MySQL help to save the user time and avoid repetitive work.
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CodeIgniter 4
About Lesson

Installation

CodeIgniter4 can be installed in several different ways: manually, using Composer, or using Git.

  • Manual Installation:
    Download the latest version, and extract it to become your project root.
  • Composer Installation:
    Composer can be used in several ways to install CodeIgniter4 on your system

Running Your App

Type the following on the command line from the root of your project:

php spark serve

The Welcome Page

Run the following URL in your browser:

http://localhost:8080/

Note

Before using CodeIgniter 4, make sure that your server meets the requirements.