Basic setup:

  Point an apache vhost to this directory.

Optional cache setup:

Install curl.

  sudo apt-get install curl

Set up a cron job to update the cache of monthly traffic totals every
day.  Change URL to suit your setup.

  (
  sudo tee -a /etc/cron.monthly/monowall-traffic-update <<EOF
  #!/bin/sh
  curl -s 'http://localhost/monowall-traffic/update.php?incremental'
  EOF
  sudo chmod +x /etc/cron.monthly/monowall-traffic-update
  )