Problema select

[gennahouse]

<?
$dbhost = 'localhost';
$dbusername = 'provabg';
$dbpasswd = 'xxxxxxxxxxxxxxxxxx';
$database_name = 'my_provabg';
$sitepath = "http://www.provabg.altervista.org/";           
$sitename = "Prova bg";
$adminemail = "gennahouse@hotmail.it";


$connection = mysql_pconnect("$dbhost","$dbusername","$dbpasswd")
    or die ("Couldn't connect to server.");

$db = mysql_select_db("$database_name", $connection)
    or die("Couldn't select database.");
?>