phpBB 3.1 extension which allows users to be able to choose a national flag and have a top (those with the most users selecting the flag) number of flags display on the index page of a phpBB 3.1 forum. Header is link to a listing of all users of a flag. Clicking on user count of the flag displays the users that have that flag set.
Index Page
Custom Flag Page
Clone (or download and move) the repository into the folder ext/rmcgirr83/nationalflags:
cd phpBB3
git clone https://github.com/RMcGirr83/phpBB-3.1-nationalflags.git ext/rmcgirr83/nationalflags/
Go to admin panel -> tab customise -> Manage extensions -> enable National Flags
Within the Admin panel visit the Extensions tab and choose the settings (allow, require on registration, display message) for the extension.