no... non uso niente del genere. Comunque ti posto il codice che facciamo prima 
all'inizio del file registrazione.php ho :
codice:
<?php include("./phpUtils/login.php"); ?>
<?php
$editFormAction = $_SERVER['PHP_SELF'];
if (isset($_SERVER['QUERY_STRING'])) {
$editFormAction .= "?" . htmlentities($_SERVER['QUERY_STRING']);
}
if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "form_regis")) {
mysql_select_db($database_XXXconnection, $XXXconnection);
$insertUtentiSQL = sprintf("INSERT INTO utenti (data_modifica, nome, cognome, password, email, indirizzo, telefono, citta, provincia, data_nascita, sesso, lat, lng) VALUES ('$now', %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)",
GetSQLValueString($_POST['txt_nome'], "text"),
GetSQLValueString($_POST['txt_cognome'], "text"),
GetSQLValueString($_POST['txt_password'], "text"),
GetSQLValueString($_POST['txt_email'], "text"),
GetSQLValueString($_POST['txt_indirizzo'], "text"),
GetSQLValueString($_POST['txt_telefono'], "text"),
GetSQLValueString($_POST['txt_citta'], "text"),
GetSQLValueString($_POST['txt_provincia'], "text"),
GetSQLValueString($_POST['txt_data_nascita'], "text"),
GetSQLValueString($_POST['list_sesso'], "text"),
GetSQLValueString($_POST['hdn_latitude'], "text"),
GetSQLValueString($_POST['hdn_longitude'], "text"));
$Result1 = mysql_query($insertUtentiSQL, $XXXconnection) or die(mysql_error());
$nextpage = 'moreinfo.php';
header("Location: " . $nextpage );
}
?>
e questo è il file login.php che includo nel precedente
codice:
<?php require_once('Connections/XXXconnection.php'); ?>
<?php
//initialize the session
if (!isset($_SESSION)) {
session_start();
}
?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")
{
$theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
$theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
switch ($theType) {
case "text":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "long":
case "int":
$theValue = ($theValue != "") ? intval($theValue) : "NULL";
break;
case "double":
$theValue = ($theValue != "") ? "'" . doubleval($theValue) . "'" : "NULL";
break;
case "date":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "defined":
$theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
break;
}
return $theValue;
}
}
?>
<?php
// *** Validate request to login to this site.
if (!isset($_SESSION)) {
session_start();
}
$loginFormAction = $_SERVER['PHP_SELF'];
if (isset($_GET['accesscheck'])) {
$_SESSION['PrevUrl'] = $_GET['accesscheck'];
}
if (isset($_POST['txt_usrn'])) {
$loginUsername=$_POST['txt_usrn'];
$password=$_POST['txt_pwd'];
$MM_fldUserAuthorization = "level";
$MM_redirectLoginSuccess = "index.php";
$MM_redirectLoginFailed = "errore.html";
$MM_redirecttoReferrer = false;
mysql_select_db($database_XXXconnection, $XXXconnection);
$LoginRS__query=sprintf("SELECT email, password, nome, level FROM utenti WHERE email=%s AND password=%s",
GetSQLValueString($loginUsername, "text"), GetSQLValueString($password, "text"));
$LoginRS = mysql_query($LoginRS__query, $sitterconnection) or die(mysql_error());
$loginFoundUser = mysql_num_rows($LoginRS);
if ($loginFoundUser) {
$loginStrGroup = mysql_result($LoginRS,0,'level');
$nomeUtente = mysql_result($LoginRS,0,'nome');
//declare two session variables and assign them
$_SESSION['MM_Username'] = $loginUsername;
$_SESSION['MM_UserGroup'] = $loginStrGroup;
$_SESSION['MM_nomeUtente'] = $nomeUtente;
if (isset($_SESSION['PrevUrl']) && false) {
$MM_redirectLoginSuccess = $_SESSION['PrevUrl'];
}
header("Location: " . $MM_redirectLoginSuccess );
}
else {
header("Location: ". $MM_redirectLoginFailed );
}
}
?>
grazie