Simple and Lightweight Auth System for CodeIgniter
Latest commit 3884a17 Oct 22, 2016 @benedmunds committed on GitHub Merge pull request #991 from Indigo744/Fix-input-post-check
Check post var against NULL instead of FALSE

Ion Auth 2

The future of authentication

by Ben Edmunds

Redux Auth 2 had a lot of potential. It's lightweight, simple, and clean, but had a ton of bugs and was missing some key features. So we refactored the code and added new features.

This version drops any backwards compatibility and makes things even more awesome then you could expect.


If you use this to further your career, or put money in your pocket, and would like to support the project please consider a moral license.


Documentation is located at


Just copy the files from this package to the corresponding folder in your application folder. For example, copy Ion_auth/config/ion_auth.php to application/config/ion_auth.php

You can also copy the entire directory structure into your third_party/ folder. For example, copy everything to /application/third_party/ion_auth/

CodeIgniter Version 2 Compatibility

CodeIgniter v2 requires the class file names to be lowercase. In order to support this follow the standard installation procedures and then either rename the following files or create symlinks

models/Ion_auth_model.php         =>   models/ion_auth_model.php
controllers/Auth.php              =>   controllers/auth.php

Relational DB Setup

Then just run the appropriate SQL file (if you're using migrations you can get the migrations from JD here:


In the package you will find example usage code in the controllers and views folders. The example code isn't the most beautiful code you'll ever see but it'll show you how to use the library and it's nice and generic so it doesn't require a MY_controller or anything else.

Default Login

Username: Password: password


It is highly recommended that you use encrypted database sessions for security!


It is recommended that you add your identity column as a unique index.

Feel free to send me an email if you have any problems.

Thanks, -Ben Edmunds @benedmunds