CodeIgniter Framework: Step-by-Step Usage Guide

CodeIgniter is a lightweight PHP framework that is simple and user-friendly. Here are the basic steps for using the CodeIgniter framework:

1. Download the CodeIgniter framework: Start by downloading the latest version of the CodeIgniter framework from the official website and unzip it into the Web directory on the server.
2. Setting up CodeIgniter framework: After extracting the CodeIgniter directory, open the config folder and edit the config.php and database.php files to configure basic website settings and database connection information.
3. Create controllers and views: Create a controller file in the application/controllers directory, define the controller class and its methods. Create a view file in the application/views directory to display page content.
4. Create a model (optional): Create a model file in the application/models directory to handle database operations.
5. Routing setup: Configure routing rules in the ‘routes.php’ file located in the ‘application/config’ directory, defining the URL and corresponding controller/method.
6. Write business logic: In the controller, create the business logic, call methods from the model to retrieve data, and load the view to display the page content.
7. Running the application: access the URL of the application through a browser to view the page design.

The above are the basic steps of using the CodeIgniter framework, hope it’s helpful for you. For more detailed tutorials and documentation, please visit the official CodeIgniter website.