Fejl i connection

Kan nogen se noget galt i nedenstående kode?
For jeg kan ik, men alligevel virker det ikke!! Ret irraterende..

<?php
//enter your database connection information
$_database="froghead_dk";
$_username1 = "froghead_dk";
$_password1 = "KODE";
$_hostname1 = "localhost";     


$con=mysql_connect($_hostname1,$_username1)or die("could not connect");
$select=mysql_select_db($_database,$con) or die(" could not choose database");
?>