title: Keeping session alive
body: <p>I'm programming a company website which has an admin page for controlling data. As I went through forums and user guides, I learned that codeigniter's session stays 5 mins and gets destroyed once it's created. I do not want this to happen when an admin is manipulating data :(</p>
  
  <p>Should I keep writing 'session_start()' in the controllers belongs to admin pages to keep the session fresh and alive? :(</p>