Clean out the viewers table every 5 minutes.

application/controllers/view.php

@@ -1,6 +1,13 @@
 <?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
 
 class View extends CI_Controller {
+	function __construct() {
+		parent::__construct();
+
+		$this->load->model('viewer');
+		$this->viewer->clean_viewers(5 * 60);
+	}
+
 	public function index() {
 		
 	}

application/models/viewer.php

@@ -23,6 +23,12 @@ class Viewer extends CI_Model {
 			return false;
 		}
 	}
+
+	function clean_viewers($duration) {
+		$clean_time = time() - $duration;
+		
+		$this->db->query("DELETE FROM viewers WHERE timestamp < $clean_time");	
+	}
 }
 
 ?>