<?php
/*
    Bandwidth Usage Graph Script for PRTG
    (C) Copyright Andrew Whyman (abyssunderground.co.uk) and Blake Buckalew (randomresources.org)
    Free to use, distribute and modify.
*/
 
# EDIT THESE VARIABLES
  $URL = ''; // URL:port to the local PRTG Web Server without a trailing slash
  $ID = '';
  $WIDTH = 300;
  $HEIGHT = 160;
# END OF VARIABLES
 
header('Content-type: image/gif');
header('Cache-Control: no-cache');
header("Local-Time: ".date("l, F j, Y - H:i:s")." (EST)");
$time = date("Ymd-H");
 
switch ($_GET['a'])
{
  case 1:
  # 5 Minutes
    $m = date("i") - 5;
    $m = sprintf("%02d", $m);
    $file = $URL."/graphimg?id=".$ID."&subid=0&width=".$WIDTH."&height=".$HEIGHT."&from=".$time.$m;
    break;
  case 2:
  # 60 Minutes (1 Hour)
    $minus5 = date("i") - 60;
    $minus5 = sprintf("%02d", $minus5);
    $file = $URL."/graphimg?id=".$ID."&subid=1&width=".$WIDTH."&height=".$HEIGHT."&from=".$time.$minus5;
    break;
  case 3:
  # 1440 Minutes (24 Hours)
    $minus5 = date("i") - 1440;
    $minus5 = sprintf("%02d", $minus5);
    $file = $URL."/graphimg?id=".$ID."&subid=2&width=".$WIDTH."&height=".$HEIGHT."&from=".$time.$minus5;
    break;
  case 4:
  # 43200 Minutes (30 Days)
    $minus5 = date("i") - 43200;
    $minus5 = sprintf("%02d", $minus5);
    $file = $URL."/graphimg?id=".$ID."&subid=3&width=".$WIDTH."&height=".$HEIGHT."&from=".$time.$minus5;
    break;
}
readfile($file);
?>