diff --git a/plugins/moodle/moodle_users_online.php b/plugins/moodle/moodle_users_online.php
index ec9c8291..959b359a 100644
--- a/plugins/moodle/moodle_users_online.php
+++ b/plugins/moodle/moodle_users_online.php
@@ -21,11 +21,43 @@
  * @version 1.0 2014
  *
  */
+$dbh = null;
 $db = getenv('db');
 $type = getenv('type');
 $host = getenv('host');
 $user = getenv('user');
 $pass = getenv('pass');
+$table_prefix = getenv('table_prefix');
 $port = getenv('port');
 if (!$port)
-    $port = 3306;
\ No newline at end of file
+    $port = 3306;
+//$graph_period = getenv('graph_period');
+$graph_period = time() - 5*60;
+
+
+if (count($argv) === 2 && $argv[1] === 'config') {
+    echo "graph_title Moodle Online Users\n";
+    echo "graph_args --base 1000 --lower-limit 0\n";
+    echo "graph_vlabel users\n";
+    echo "graph_category Moodle\n";
+    echo "graph_scale no\n";
+    echo "graph_info Displays the sum of online users in your Moodle site\n";
+    echo "users_online.label online users\n";
+    echo "users_online.min 0\n";
+    exit(0);
+}
+
+try {
+    $dsn = $type . ':host=' . $host . ';port=' . $port . ';dbname=' . $db;
+    $dbh = new PDO($dsn, $user, $pass);
+} catch (Exception $e) {
+    echo "Connection failed\n";
+    exit(1);
+}
+
+//Online users
+$nbusers = 0;
+if (($stmt = $dbh->query("SELECT count(id) AS users FROM {$table_prefix}user WHERE lastaccess > $graph_period")) != false) {
+    $nbusers = $stmt->fetchColumn();
+}
+echo "users_online.value $nbusers\n";
\ No newline at end of file