CodeIgniter is a PHP full-stack web framework that is light, fast, flexible, and secure. More information can be found at the official site.

This repository holds a composer-installable app starter. It has been built from the development repository.

This is pre-release code and should not be used in production sites.

More information about the plans for version 4 can be found in the announcement on the forums.

The user guide corresponding to this version of the framework can be found here.

composer create-project codeigniter4/appstarter then composer update whenever there is a new release of the framework.

When updating, check the release notes to see if there are any changes you might need to apply to your app folder. The affected files can be copied or merged from vendor/codeigniter4/framework/app.

Copy env to .env and tailor for your app, specifically the baseURL and any database settings.

index.php is no longer in the root of the project! It has been moved inside the public folder, for better security and separation of components.

This means that you should configure your web server to "point" to your project's public folder, and not to the project root. A better practice would be to configure a virtual host to point there. A poor practice would be to point your web server to the project root and expect to enter public/..., as the rest of your logic and the framework are exposed.

Please read the user guide for a better explanation of how CI4 works! The user guide updating and deployment is a bit awkward at the moment, but we are working on it!

We use Github issues, in our main repository, to track BUGS and to track approved DEVELOPMENT work packages. We use our forum to provide SUPPORT and to discuss FEATURE REQUESTS.

This repository is a "distribution" one, built by our release preparation script. Problems with it can be raised on our forum, or as issues in the main repository.

PHP version 7.2 or higher is required, with the following extensions installed:

• intl
• libcurl if you plan to use the HTTP\CURLRequest library

Additionally, make sure that the following extensions are enabled in your PHP:

• json (enabled by default - don't turn it off)
• mbstring
• mysqlnd
• xml (enabled by default - don't turn it off)