IPTracker: Class for storing visitor data in a db or textfile

This is the abstract class for tracking visitor id. There are two subclasses for using either a database or a file for storing the information. Currently the ip, the hostname, the time and the last visited link are stored.

PUBLIC:
var $count

function getIP()
function track()
function getAll()
function get($id)
function getIdentifier()
PRIVATE:
function _store($ip, $host, $from)
function _countEntries()