File upload allowed types

[phpcodex]

During the setup of this, we are assuming the person installing this resource actually knows the general files they should exclude, however, if this script is pushed into an auto-installer, such as cPanels Fantastico - the user might not actually know what to choose.

I'd suggest what we should do is have a drop-down menu of a pre-populated list which the user can "tick" to enable.

Eg: Rather than typing .zip - have a menu that says "Allow Zip Archives" and this will automatically add .zip, .rar etc..