php - $_SERVER['REMOTE_PORT'] not giving value -

we have nginx/1.9.1.

while doing phpinfo(), not able values of below paramentera.

_server["remote_port"]  no value _env["remote_port"] no value 

though have below settings in fastcgi config file

fastcgi_param  remote_addr        $remote_addr; fastcgi_param  remote_port        $remote_port; fastcgi_param  server_addr        $server_addr; fastcgi_param  server_port        $server_port; fastcgi_param  server_name        $server_name; 

can guide where's mistake?