Nginx sub folder configuration for Trailing Slash Solution - http://josephspurrier.com/trailing-slash-solution/

nginx.conf

        location @testrewrites {
            # Send all requests to index.php
            rewrite ^ /test/index.php last;
        }
        
        # Else use this location block
        location ~* ^/test/.*\.php$ {
            # Strip subdir index.php and query string
            if ( $request_uri ~* ^/(.*)/index\.php\?+) {
                rewrite (?i)^/(.*)/index\.php /$1/? permanent;   
            } 
            
            try_files $uri $uri/ @testrewrites;
            
            fastcgi_split_path_info ^(.+\.php)(/.+)$;
            # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini
            # With php5-cgi alone:
            fastcgi_pass 127.0.0.1:9000;
            # With php5-fpm:
            #fastcgi_pass unix:/var/run/php5-fpm.sock;
            fastcgi_index index.php;
            include fastcgi_params;
        }
        
        # Else use this location block
        location ~* ^/test/.* {
            try_files $uri $uri/ @testrewrites;
        }