CodeIgniter 4 Development

What is CodeIgniter?

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 the source code for CodeIgniter 4 only. Version 4 is a complete rewrite to bring the quality and the code into a more modern version, while still keeping as many of the things intact that has made people love the framework over the years.

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

Documentation

The User Guide is the primary documentation for CodeIgniter 4.

The current in-progress User Guide can be found here. As with the rest of the framework, it is a work in progress, and will see changes over time to structure, explanations, etc.

You might also be interested in the API documentation for the framework components.

Important Change with index.php

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!

Repository Management

CodeIgniter is developed completely on a volunteer basis. As such, please give up to 7 days for your issues to be reviewed. If you haven't heard from one of the team in that time period, feel free to leave a comment on the issue so that it gets brought back to our attention.

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

If you raise an issue here that pertains to support or a feature request, it will be closed! If you are not sure if you have found a bug, raise a thread on the forum first - someone else may have encountered the same thing.

Before raising a new Github issue, please check that your bug hasn't already been reported or fixed.

We use pull requests (PRs) for CONTRIBUTIONS to the repository. We are looking for contributions that address one of the reported bugs or approved work packages.

Do not use a PR as a form of feature request. Unsolicited contributions will only be considered if they fit nicely into the framework roadmap. Remember that some components that were part of CodeIgniter 3 are being moved to optional packages, with their own repository.

Contributing

We are accepting contributions from the community!

We will try to manage the process somewhat, by adding a "help wanted" label to those that we are specifically interested in at any point in time. Join the discussion for those issues and let us know if you want to take the lead on one of them.

At this time, we are not looking for out-of-scope contributions, only those that would be considered part of our controlled evolution!

Please read the Contributing to CodeIgniter section in the user guide.

Server Requirements

PHP version 7.3 or higher is required, with the following extensions installed:

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

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

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

Running CodeIgniter Tests

Information on running the CodeIgniter test suite can be found in the README.md file in the tests directory.

License

dev-cho/CodeIgniter4

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