$host = "localhost";
$user = "root";
$pass = "DIN_LÖSSENORD_TILL_PHPMYADMIN";
$databas = "DIN_DATABAS";
try {
    $dbh = new PDO('mysql:host='.$host.';dbname='.$databas,$user,$pass);
} catch(PDOException $e) {
    print "Error: ".$e->getMessage()."<br/>";
    die();
}