SQL Query causing blank page

[.Simon.]

I've just got a basic query to delete the fields for a certain user, determined by a dropdown form on a previous page. I've tested the $_POST['Username'] with an echo and that is working fine, but as soon as I add the query it all goes blank, no error message or anything. Here the source:

PHP Code:

<?php 
// MySQL Connection Info
$server = "localhost";                  // Server Name
$username = "#";         // MySQL Username
$password = "#";                        // MySQL Password
$dbname = "w#";           // Database Name
 
 
// MySQL Connect String
$con = mysql_connect("$server","$username","$password");

if (!$con)
  {
  die('Could not connect: ' . mysql_error());
  }
 
// Select the database
mysql_select_db("$dbname");

if (!mysql_select_db)
  {
  die('Could not select database: ' . mysql_error());
  }
  
$deleteuser = $_POST['Username'];

echo 'Hello ' . $deleteuser;

$eraseuser = mysql_query("DELETE FROM users WHERE Username = '" . $deleteuser . "'");
    if (!$eraseuser) {
        die ( 'Delete unsuccessful: ' . mysql_error())
        };

?>

PS: If you spot any bad coding I can rectify please let me know, just starting to learn this stuff ;P