Salve sto sviluppando un progettino in php e quando carico sul browser la pagina
<?php
include"param.php";

$link = mysql_connect($db_host, $db_user, $db_password)
or die("Could not connect ");
print ("Connected successfully ");

mysql_select_db($db_name, $link)
or die ("Error in Database Input ");

mysql_close($link);

?>

con param.php =
<?
// parametri del database
$db_host = "localhost";
$db_user = "root";
$db_password = "sdfgs";
$db_name = "clienti";
//password per inserimento
$password = "dzfgsd";
?>

ricevo questo:

Notice: Undefined variable: db_host in C:\www\MySQLConnect.php on line 4

Notice: Undefined variable: db_user in C:\www\MySQLConnect.php on line 4

Notice: Undefined variable: db_password in C:\www\MySQLConnect.php on line 4

Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'ODBC'@'localhost' (using password: NO) in C:\www\MySQLConnect.php on line 4
Could not connect

AIUTO!!!
GRAZIE MILLE!!!