add livecount

scripts/livecount.php

@@ -0,0 +1,44 @@
+<?php
+$dbfile = "../data/visitors.db"; // path to data file
+$expire = 300; // average time in seconds to consider someone online before removing from the list
+
+if(!file_exists($dbfile)) {
+	$fp=fopen($dbfile,"w");
+	fclose($fp);
+}
+
+function CountVisitors() {
+	global $dbfile, $expire;
+	$cur_ip = getIP();
+	$cur_time = time();
+	$dbary_new = array();
+
+	$dbary = unserialize(file_get_contents($dbfile));
+	if(is_array($dbary)) {
+		while(list($user_ip, $user_time) = each($dbary)) {
+			if(($user_ip != $cur_ip) && (($user_time + $expire) > $cur_time)) {
+				$dbary_new[$user_ip] = $user_time;
+			}
+		}
+	}
+	$dbary_new[$cur_ip] = $cur_time; // add record for current user
+
+	$fp = fopen($dbfile, "w");
+	fputs($fp, serialize($dbary_new));
+	fclose($fp);
+
+	$out = sprintf("%d", count($dbary_new)); // format the result to display 3 digits with leading 0's
+	return $out;
+}
+
+function getIP() {
+	if(isset($_SERVER['HTTP_X_FORWARDED_FOR'])) $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
+	elseif(isset($_SERVER['REMOTE_ADDR'])) $ip = $_SERVER['REMOTE_ADDR'];
+	else $ip = "0";
+	return $ip;
+}
+
+$visitors_online = CountVisitors();
+
+echo $visitors_online;
+?>