Be caro rasega,, ()

Ti inlustro quello che ho fatto..
//////////////////////////////////////////////////////////////////////////

session_start();
$quantita=$_POST['quantity'];

$db_host = "//";
$db_user = "//";
$db_password = "//";
$db_name = "//";
mysql_connect($db_host,$db_user,$db_pass); #connessione al database
mysql_select_db($db_name); #selezione del database

$ident=$_SESSION['gv_id'];
$query = "UPDATE jos_gv_users SET credito='credito+$quantita' WHERE id='$ident'";
mysql_query($query,$db_name) or die("Errore nella query: " . mysql_error());

$righe = mysql_affected_rows($db_name); /* $righe riceve il numero di righe modificate dall'UPDATE */
//echo $query
echo "il tuo credito e' stato incrementato di :$quantita";
//////////////////////////////////////////////////////////////////////////
la echo $query ho dovuto commentarla perche mi dava errore.
CMQ il risultato e stao quello sottoriportato....

Warning: mysql_connect() [function.mysql-connect]: Access denied for user 'pippo'@'111.111.111.111' (using password: NO) in /web/htdocs/www.evaelamela.com/home/paypal/ipn.php on line 145

Warning: mysql_select_db() [function.mysql-select-db]: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) in /web/htdocs/www.evaelamela.com/home/paypal/ipn.php on line 146

Warning: mysql_select_db() [function.mysql-select-db]: A link to the server could not be established in /web/htdocs/www.evaelamela.com/home/paypal/ipn.php on line 146

Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource in /web/htdocs/www.evaelamela.com/home/paypal/ipn.php on line 150
Errore nella query: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)


Che cavolo stà succedendo ????