Multiple projects with the same application folder.

trying to understand this -- why exactly do you need separate folders? if this is under one domain then it seems like you would have users, and then those users have access to their own files etc. so basically you could have separate assets folders for each user -- and those different assets folders are on the server but not in the application folder -- to hold their stuff.

and then everything else in terms of what they have access to is done by logging in to your application. also i have not played around with it but codeigniter 3 allows you to have view files outside the application folder.