php sqlsrv connection by multiple servers to one specific database - php

Question

So I have 3 servers(192.168.0.21 , 192.168.0.22 and 192.168.0.23) and I would like them to connect to a database called Pensions they are all using sql server (UID and PWD)authentication. Is it possible to achieve this using php and sqlsrv_connect()? This the connect.php:
<?php
#first start session
session_start();
// session time out after no activity for 4 minutes
if ($_SESSION['TimeOut'] + (5 * 60) < time()) {
// session timed out
header("Location: ./sessdestroy.php");
exit;
} else {
// store new request time.
$_SESSION["TimeOut"] = time();
}
function getConnection(){
$db = 0;
if(!$_SESSION['Database']){
$db = 0;
}else{
$db = $_SESSION['Database'];
}
$databaseName = 'Pension';
if ($db == 0)
{ // Country A
$serverName ='192.168.0.21';
$UID ='sa';
$PWD ='pass!';
$databaseName = 'Pension';
}
else if($db ==1)
{ // Country B
$serverName ='192.168.0.22';
$UID ='sa';
$PWD ='pass!';
$databaseName = 'Pension';
}
else
{ //Country C
$serverName ='192.168.0.23';
$UID ='sa';
$PWD ='pass!';
$databaseName = 'Pension';
}
//connection string
//echo "test here...";
//echo " S: ".$serverName." u: ".$UID." P: ".$PWD;
$serverName = "serverName";
$connectionInfo = array( "Database"=>"$databaseName", "UID"=>"$UID", "PWD"=>"$PWD");
$conn = sqlsrv_connect($serverName,$connectionInfo);
//exit();
//phpinfo();
if (!$conn)
{
exit("Connection Failed: " . $conn);
//try local server
if ($db == 1) {
$serverName ='192.168.0.20';
$UID ='fund_user';
$PWD ='fund_user';
$databaseName = 'Pension';
$conn = sqlsrv_connect($serverName,$connectionInfo);
if (!$conn) return 0;
$stmt = sqlsrv_query($databaseName,$conn);
return $conn;
}
return 0;
}
else
{
$stmt = sqlsrv_query($databaseName,$conn);
return $conn;
}
}
?>
Then this is the process.php (when a connection is established it leads the user to a homepage depending on the user role )
<?php
//give no error
ini_set("display warning",0);
#include connection
include('Connections/fundmaster.php');
if(!isset($_SESSION))
{
session_start();
}
//temp store for the database session before destory
$db = 0;
$db = $_SESSION["Database"];
if ($db==""){
$db = 0;
}
if (!isset($_SESSION["Database"]))
{
$_SESSION["Database"] = 0;
}
$_SESSION["Database"] = $db;
if($_POST['subLogin'])
{
$nationalID = $_POST['sname'];
$PWD = $_POST['Memberno'];
$conn = getConnection();
$sql = "select * from netlogin where NationalID = '";
$sql .= $nationalID ."' and vcPassword= '" .$PWD."'";
$sql = stripslashes($sql);
$stmt = sqlsrv_query($sql, $conn);
if($row = sqlsrv_fetch_array($stmt)){
$SchemeNo = $row[0];
$MemberNo = $row[1];
$userRole = $row[6];
session_start();
if (!isset($_SESSION["SchemeNo"]))
{
$_SESSION["SchemeNo"] = $SchemeNo;
}
if (!isset($_SESSION["MemberNo"]))
{
$_SESSION["MemberNo"] = $MemberNo;
}
if (!isset($_SESSION["userRole"]))
{
$_SESSION["userRole"] = $userRole;
}
$_SESSION["SchemeNo"] = $SchemeNo;
$_SESSION["MemberNo"] = $MemberNo;
$_SESSION["userRole"] = $userRole;
$_SESSION["Database"] = $db;
if($userRole == "1"){
header("Location:admin/adminarea.php");
}else{
header("Location:membersarea.php");
}
}else{
header("Location: login.php");
}
}else{
header("Location: login.php");
}
?>