Tracking Referrers?

[furious5]

I'm currently trying to work out a way of tracking who referrers are to my site, or how people have got to my site.

Does anyone know of any good tutorials covering this subject, I'm guessing it is as simple as creating a session id, and recording that session id within a table and then getting at those results, but wouldn't mind just reading over something first.

[weekender]

i use the following function in the head of all my files

function db_post_stat()
{
	//echo "$sql<BR>";
	include "vars.php";
	$link = mysql_connect($dbhost, $dbuser, $dbpass);
	mysql_select_db($dbname);
	$sess_id = session_id();
	$server = $_SERVER['SERVER_NAME'];
	$url = $_SERVER['PHP_SELF'];
	$query_string = $_SERVER['QUERY_STRING'];
	$ip = $_SERVER['REMOTE_ADDR'];
	$user = $_SESSION['uname'];
	$sql = "INSERT INTO {$table['stats']}(sess_id, time, server, url, query_string, ip, user) VALUES ('$sess_id', NOW(), '$server', '$url', '$query_string', '$ip', '$user')";
	//echo $sql . "<BR>";
	$result = mysql_query($sql)
		or die("Error in stat sql");
	mysql_close($link);
	return TRUE;
}

This basically connects to a database and posts information about the session, user logged in, ip, time and which server and page they are visiting. You could easily add a variable for http referrer into it. Haven't done the code to display results yet, but if you want i'll post it here.

[furious5]

Thanks for that, that is basically what I had thought about doing.

But just thought it would be worth checking initially.