<?php
// Server in the this format: <computer><instance name> or
// <server>,<port> when using a non default port number
$server = '11.22.33.44abcdefgh';

// Connect to MSSQL
$link = mssql_connect($server, 'db_username', 'db_password');

if (!$link) {
    die('Something went wrong while connecting to MSSQL');
}
?>

$server = '11.22.33.44/abcdefgh';

$server = 'http://11.22.33.44abcdefgh';

$server = 'https://11.22.33.44abcdefgh';

$server = '11.22.33.44';

$server = '11.22.33.44:1431';

$server = '11.22.33.44,1431';

$server = '11.22.33.44';
      // Connect to MSSQL
      $link = mssql_connect($server, 'db_username', 'db_password');

$username ="WRITEUSER";
$password = "WRITEPASS";
$database = "WRITEDB";
$server = "WRITESERVERIP";

$connection = mssql_connect($server, $username, $password);
if (!$connection) {  die('Not connected : ' . mssql_get_last_message());}


$db_selected = mssql_select_db($databaseb, $connection);
if (!$db_selected) {
  die ('Can't use db : ' . mssql_get_last_message());
} else{

    // Success
}