Tag Archives: output

Disable browser cache easily with CodeIgniter

I have a project where users are validated by session data. When the user logs out I destroy the session and redirect them to the log-in page, but this does not prevent them from clicking the browser’s “back” button, in which case they still see the data.

My first solution was to set headers with PHP’s header() function. Then I decided to use CodeIgniter’s setheader() function from the Output library (no real difference, just using CI methods when possible). Finally, I decided the best way to do this would be to extend the Output library itself. This way I am not repeating multiple function calls in each controller. Here is end-result… Continue reading