User authentication with CodeIgniter

Question

I am writing a web application using PHP. I want to use the MVC pattern for this, and decided to go with CodeIgniter. My application will have some pages which will require auth

Answer 1

Write a custom library that you can autoload in your code igniter app on every page view. It should have functions that:

• Authenticate the user ie. check if a user is logged in or not
• Log you in ie. set a session variable or something
• Log you out

Then in your controller classes you can do a call to the authentication function in the constructor then depending on the outcome continue as normal or redirect them to a login screen with an access denied message.

Do a search on the code igniter wiki for 'authentication' and there are a number of results that may help: http://codeigniter.com/wiki/