Read a list of features available from the flexi auth library.
http://haseydesign.com/flexi-auth/auth_lite/features
To get started with using the library, read the installation guide.
http://haseydesign.com/flexi-auth/user_guide/installation
Flexi auth Concept: http://haseydesign.com/flexi-auth/user_guide/concept/
Library Overview: http://haseydesign.com/flexi-auth/
Library Demo: http://haseydesign.com/flexi-auth/auth_lite/demo/
Library User Guide: http://haseydesign.com/flexi-auth/user_guide/
If you would just like the core files required for your project, be sure to check dansanti fork. https://github.com/dansanti/flexi-auth
Source : https://github.com/haseydesign/flexi-auth
Codeigniter 3 : https://github.com/Reconix/Flexi-Auth/tree/Flexi-Auth-CI3
Core Files Only : https://github.com/Reconix/Flexi-Auth-CI3/tree/Core-Files
Because why not... https://reconix.github.io/Flexi-Auth-CI3/
Update the 'base_url' to CodeIgniters root installation directory.
$config['base_url'] = 'http://localhost/your_codeigniter_directory/';
Update the 'encryption_key' config setting to a value of your choice.
This is optional, but will improve security with your CodeIgniter installation.
$config['encryption_key'] = 'YOUR_ENCRYPTION_KEY';
get your key here
http://jeffreybarke.net/tools/codeigniter-encryption-key-generator/
Original Author: Rob Hussey
Additnial Contributions: Dansanti , Jeteon , Reconix , eafarooqi