Random mirrors and download quota

Hello, I have a script (at bottom) that, upon loading, will randomly select a mirror or primary server (on average, the primary servers will be selected twice as much). It all works good, but now, I have to add a "quota manager" that will, for both mirrors, limit the times the file can be downloaded to 1200 times (there is only one file being downloaded). I have thought about storing a text file for each of the two mirrors that shows the current count of downloads, and it will be checked if the mirror is randomly selected and if it is above 1200, will randomly select another server, and if it isn't, will just add one to it and update the file. How would I go about this, or is there a better way to do this? Thanks in advance. Andrew Conner The script (I know it doesn't use the best design, but it works, any better ways of doing this?): ---------------- <? // This array holds the servers, and has a double entry for the primary servers $adArr = array("http://www.someprimaryserver.com/file.exe", "http://www.someprimaryserver.com/file.exe", "http://www.someprimaryserver2.com/file.exe", "http://www.someprimaryserver2.com/file.exe", "http://www.someprimaryserver3.com/file.exe", "http://www.someprimaryserver3.com/file.exe", "http://www.someprimaryserver4.com/file.exe", "http://www.someprimaryserver4.com/file.exe", "http://www.somemirror.com/file.exe", "http://www.somemirror2.com/file.exe"); // This randomly gets a server... srand((double)microtime()*1000000); $wOne = rand(0, 9); $choice = $adArr[$wOne]; // This fwds the user to the server picked. // Somewhere in here needs to be the mirror stuff... header("Location: $choice"); ?>