I trying something like this , but no result

$dbconn = pg_connect("host=ip port=5432 dbname=fundatia user=root password=passw");

Is showing this error 

Fatal error

/home/httpd/vhosts/ipexample/httpdocs/odooconnect/odooconnect.p

3

Is there any configuration I need to do ?

Can someone give me an example with webservice on odoo?

I'am using odoo 9

All the best!