Introduction to CodeIgniter | Lightweight PHP Framework for Rapid Development

CodeIgniter is a powerful PHP framework built for developers who need a simple and elegant toolkit to create full-featured web applications. It is known for its small footprint, high performance, and exceptional speed.

Key Features of CodeIgniter

1. MVC (Model-View-Controller) Architecture

Helps organize code into models (data), views (UI), and controllers (logic).

2. Lightweight and Fast

CodeIgniter is extremely fast compared to other PHP frameworks.

3. No Need for Template Engine

You can use plain PHP in your views.

4. Security

Built-in protections against CSRF, XSS, and SQL injection.

5. Simple Configuration

All configurations are PHP-based — no YAML or XML required.

6. Rich Set of Libraries

Comes with many libraries for sessions, form validation, email, database, etc.

Why Use CodeIgniter?

Beginner Friendly: Easy learning curve.
Documentation: Excellent official documentation.
No Composer Required: Can be used in shared hosting easily.
Community Support: Active forums and contributors.

Step 1: Install CodeIgniter

If you have Composer installed, run this in your terminal:

composer create-project codeigniter4/appstarter my_project

appstarter: CodeIgniter 4 starter project.

my_project: Folder where your app will be created.

Once installed, navigate to the project:

cd my_project
php spark serve

This command will start a local server at http://localhost:8080

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