Consult bank on another server

If the mysql server does not have an "inbound" firewall, you can usually access it with mysqli or PDO , just point the mysql server IP address or its host address if you have).

Example with mysqli :

<?php
$nomedoservidor = "mysql.outro-host.com";
$usuario = "username";
$senha = "password";
$banco = "banco1";

$conn = new mysqli($nomedoservidor, $usuario, $senha, $banco);

If it is a "fixed ip":

<?php
$nomedoservidor = "203.40.1.2"; //Exemplo fictício
$usuario = "username";
$senha = "password";
$banco = "banco1";

$conn = new mysqli($nomedoservidor, $usuario, $senha, $banco);

I recommend to read:

• PHP only connects to MySQL?
• What's the difference between MySQL and phpMyAdmin?
• What is the difference between Xampp, Wamp, EasyPHP, Zwamp and PHP?

These posts will help you understand where the Mysql server is, where is PHP, where is Apache and what is Mysql API .