Redirect

<?

//prevents caching
header("Expires: Sat, 01 Jan 2000 00:00:00 GMT");
header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT");
header("Cache-Control: post-check=0, pre-check=0",false);
session_cache_limiter();

session_start();

//clear session variables
session_unset();


//require the functions file
require ("config.php");
require ("functions.php");

//check to see if cookies are already set, remember me
if ((!$lr_user) || (!$lr_pass))
{

$username = $_POST[username];
$password = $_POST[password];

}else{

$username = $lr_user;
$password = $lr_pass;

}

//if username or password is blank, send to errorlogin.html
if ((!$username) || (!$password))
{

    header("Location:$base_dir/errorlogin.html");
    exit;
}

//sets cookies to remember this computer if the user asks to
if ($_POST[remember] == "Yes")
{
setcookie("lr_user", $username, $duration, "/", $domain);
setcookie("lr_pass", $password, $duration, "/", $domain);
}

if ($_POST[activate] == "Yes")
{
        //make the connection to the database
        $connection = @mysql_connect($server, $dbusername, $dbpassword) or die(mysql_error());
        $db = @mysql_select_db($db_name,$connection)or die(mysql_error());

        //build and issue the query
        $sql ="UPDATE $table_name SET verified = '1' WHERE username = '$_POST[username]'";
        $result = @mysql_query($sql,$connection) or die(mysql_error());
}

//sets session variables
sess_vars($base_dir, $server, $dbusername, $dbpassword, $db_name, $table_name, $username, $password);

//check to see if the user has to change their password
if ($_SESSION[pchange] == "1")
{
    $_SESSION[redirect] = "$base_dir/pass_change.html";
}

//check to see if the user has activated the account
if ($_SESSION[verified] == "0")
{
    $_SESSION[redirect] = "$base_dir/not_activated.html";
}

//make the connection to the database
$connection = @mysql_connect($server, $dbusername, $dbpassword) or die(mysql_error());
$db = @mysql_select_db($db_name,$connection)or die(mysql_error());

//build and issue the query
$sql ="SELECT * FROM banned";
$result = @mysql_query($sql,$connection) or die(mysql_error());

while ($sql = mysql_fetch_object($result))
    {
    $banned = $sql -> no_access;
    if ($username == $banned || $REMOTE_ADDR == $banned)
        {
            include ('banned.html');
            exit;
        }
    }

$last_log = last_login();

//updates table with last log as now
$sql = "UPDATE $table_name SET last_login = '$last_log' WHERE username = '$_SESSION[user_name]'";
$result = @mysql_query($sql,$connection) or die(mysql_error());

if (($_SESSION[redirect] != "$base_dir/errorlogin.html") && ($log_login == "1"))
{
    include('loglogin.php');
}

//redirects the user
header("Location:$_SESSION[redirect]");

?>

<head><title>Redirect</title></head>