Two or more document roots using uhttpd

Edit (nano recommended) /etc/config/uhttpd file for uhttpd to support multiple document roots.

# Server configuration
   config uhttpd main
   list listen_http 0.0.0.0:80
   option home /www
   option cgi_prefix /cgi-bin

config uhttpd secondary
   list listen_http 0.0.0.0:81
   option home /www/fusionpbx
   option cgi_prefix /cgi-bin

# ...


Add this line in the appropiate option to serve php:

option 'index_page' 'index.php'

also, root_doc on php.ini should be empty