Laravel in a Sub Directory with NGINX

config

    location ^~ /xxx {
        alias /var/www/xxx/public;
        try_files $uri $uri/ @xxx;

        location ~* \.php {
            fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
            fastcgi_split_path_info ^(.+\.php)(.*)$;
            include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME /var/www/xxx/public/index.php;
        }
    }

    location @xxx {
        rewrite ^/xxx/(.*)$ /xxx/index.php/$1 last; # THIS IS THE IMPORTANT LINE
    }