Thanks, but I was more looking for a way that I could find out using PHP.
The reason for this is that i'm giving out free hosting on my site but I want each user folder to have limited bandwidth, so i'm going to create a php file, and check each folder's bandwidth and if its over a set limit then it will redirect anyone that try's to access something in that folder to a 'Bandwidth error' page.
The file will be ran by the server every 2 minutes.
Thats the only way I could think of to give limited bandwidth to users, so if anyone can help or give me an alternative way it would be appreciated.