W2k12 + IIS + PHP 5.6 + SQL Express 2012 >>> error to connect PHP to DB

Hi,

this is a fresh install of Windows Server 2012 where I used 'MS Web Plataform Installer' to install PHP (after I installed mannualy the 'Visual C++ Redistributable for Visual Studio 2012 Update 4'). The PHP is working and then I installed the MS SQL 2012 Express, I already set up the MSSQL TCP properties to connect by IP address since I´m able to connect using .ASP files.

<%
        Set cn = Server.CreateObject("ADODB.Connection")
        cn.Open "Provider=SQLOLEDB;Server=192.168.100.22;Database=ruedb;UID=sa;PWD=sql20015;"
        cn.CommandTimeout = 900
        cn.Close
        Response.write("Connected Successfully")
%>

I already download the 'Microsoft Drivers 3.0 for PHP for SQL Server' from 'http://www.microsoft.com/en-us/download/details.aspx?id=20098' and then extracted to 'C:\Program Files (x86)\PHP\v5.6\ext'. Now I need to set up the PHP to stablish communication with that DB.

<?php
	$link = mssql_connect('192.168.100.22', 'sa', 'sql20015');
	if(!$link) {
		echo'Could not connect';
		die('Could not connect: ' . mssql_error());
	}
	echo'Successful connection';
	mssql_close($link);
?>

but shows the following msg:

Fatal error: Call to undefined function mssql_connect() in C:\inetpub\wwwroot\rue103\testedb.php on line 2

The installer of the app show the following:

SQL Server (SQLSRV):  NOT AVAILABLE (See http://www.php.net/manual/en/ref.pdo-sqlsrv.php)

My current PHP.INI call this extensions:

[ExtensionList]
extension=php_curl.dll
extension=php_exif.dll
extension=php_gd2.dll
extension=php_gettext.dll
extension=php_imap.dll
extension=php_mbstring.dll
extension=php_mysql.dll
extension=php_mysqli.dll
extension=php_openssl.dll
extension=php_pdo_mysql.dll
extension=php_pdo_sqlite.dll
extension=php_pdo_sqlsrv_54_nts.dll
extension=php_soap.dll
extension=php_sqlsrv_54_nts.dll
extension=php_tidy.dll
extension=php_xmlrpc.dll

>>> Should I install anything else?