Codeigniter Disable Cache

Just put this code in the __construct function of controller

$this->output->set_header('Last-Modified: ' . gmdate("D, d M Y H:i:s") . ' GMT');('Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0');
$this->output->set_header('Pragma: no-cache');
$this->output->set_header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");