ทำอย่างไรให้ Server A สามารถ Connect Database Server B ได้ครับ

<?php

$server = "203.164.224.163:85";  // server name of the database
$database = "inputter_2015";     // database name
$username = "inputter";     // username of the database
$password = "password3";  // password of the  database

//connect the database server
 $connection = mysql_connect($server,$username,$password);
 if(!$connection){
    die("database connection failed ".mysql_error());
 }
// else
  //  echo "connection successfully";
 // if connection successful then connect the selected database
 $db_select = mysql_select_db($database,$connection);
 if(!$db_select){
    die("database selection failed ".mysql_error()); 
 }
 
date_default_timezone_set('Asia/Brunei');   
 
?>