Am followoing this amazingly simple LAMP tutorial

http://ubuntuserverguide.com/2014/06/how-to-install-lamp-in-ubuntu-server-14-04-lts.html

• Installing Apache


• Installing MySQL


• Installing PHP

The PROBLEM is:

• When I check on my brower localhost/phpmysql.php


• I just see BLANK PAGE


• If the php had been runned i should see either CONGRATULATIONS or
  ERROR message back.

 <?php

    $con = mysql_connect("localhost","root","passwordxxxxxx");

    if (!$con)

    {

     die('Could not connect: ' . mysql_error());

    }

    else

    {

     echo "Congrats! connection established successfully";

    }

    mysql_close($con);

  ?>

Is there any error on this PHP code maybe?
For example: if the password is wrong setup on the PHPMYSQL.PHP file I should get back and ERROR MESSAGE couse i have a ECHO.

Why am getting a blank response? any idea of some workaround?
Thanks