title: CodeIgniter back button after logout
body: <p>I'm trying to stop/disable the back button functionality of the browser when a user logs out of my CodeIgniter (PHP) app. But, I think the browser is caching the page so it becomes visible despite the session being destroyed from logout.</p>
  
  <p>I know the session is dead because when the user tries to do anything (click any link etc) they are kicked out through the methods in my controller.</p>
  
  <p>It's not ideal to have the back button working in this manner since the previous page contains confidential information.</p>
  
  <p>Not a clue how to tackle this one, maybe a redirect page in between (but then the user could slam the back button really quick right?), help!</p>
  
  <p>Thanks.</p>