CodeIgniter is a powerful PHP framework with a very small footprint, built for developers who need a simple and elegant toolkit to create full-featured web applications.

CodeIgniter is an Application Development Framework - a toolkit - for people who build web sites using PHP.

Aug 2, 2025 · Getting Started Installation Composer Installation Manual Installation Running Your App Troubleshooting Deployment Change Logs Upgrading From a Previous Version CodeIgniter …

Aug 2, 2025 · You can serve it through any server of your choice, Apache, nginx, etc, but CodeIgniter comes with a simple command that takes advantage of PHP’s built-in server to get you up and …

Introduction ¶ CodeIgniter Overview Getting Started CodeIgniter at a Glance Supported Features Application Flow Chart Model-View-Controller Architectural Goals

The first step is to install CodeIgniter, then read all the topics in the Introduction section of the Table of Contents. Next, read each of the General Topics pages in order. Each topic builds on the previous …

This tutorial is intended to introduce you to the CodeIgniter framework and the basic principles of MVC architecture. It will show you how a basic CodeIgniter application is constructed in step-by-step fashion.

Aug 2, 2025 · We recommend the Composer installation because it keeps CodeIgniter up to date easily. If you would like the simple “download & go” install that CodeIgniter 3 is known for, choose the …

The following pages describe the broad concepts behind CodeIgniter: Getting Started CodeIgniter at a Glance Supported Features Application Flow Chart Model-View-Controller Architectural Goals Next …

CodeIgniter 3 is the legacy version of the framework, intended for use with PHP 5.6+. This version is in maintenance, receiving mostly just security updates, and the current version is 3.1.13.