updates.php should look something like this to prevent the undefined index error after login:
PHP Code:
<?php
session_start();
include 'config.php';
if(isset($_POST['user']) && isset($_POST['pass']))
{
$user = mysql_real_escape_string($_POST['user']);
$pass = mysql_real_escape_string($_POST['pass']);
$stat = mysql_fetch_array(mysql_query("select * from members where user='$user' and pass='$pass'"));
$_SESSION['stat'] = $stat;
print "Welcome {$stat['user']}";
}
else if(isset($_SESSION['stat']['user']))
{
print "Welcome {$_SESSION['stat']['user']}";
}