Detect and connect to db server with proper configuration. The code check if the web app is hosted at localhost or a web server and load proper db configuration.

get-db.php

$local = array(
    '127.0.0.1',
    '::1'
);   // localhost

if(!in_array($_SERVER['REMOTE_ADDR'], $local)){
    require_once('connection-db.php');   // db connection details for server
}
else{
  require_once('db-connect-local.php');   // db connection details for localhost
}