Using the login and authentication wizard through Dreamweaver 8

Question

can anybody tell me what these error messages are? I have
that logon.php file in that directory. I am not sure what these
messages mean?
when page loads I get these.......
Warning: open(/tmp\sess_df7e67aa92cb740cee4bce1b9ac58406,
O_RDWR) failed: No such file or directory (2) in
c:\phpdev5\www\user_logon.php on line 5
Warning: open(/tmp\sess_df7e67aa92cb740cee4bce1b9ac58406,
O_RDWR) failed: No such file or directory (2) in Unknown on line 0
Warning: Failed to write session data (files). Please verify
that the current setting of session.save_path is correct (/tmp) in
Unknown on line 0
when I hit submit I receive this message....
Warning: Cannot add header information - headers already sent
by (output started at c:\phpdev5\www\user_logon.php:5) in
c:\phpdev5\www\user_logon.php on line 40

Answer 1

here is the code I am using..
<?php require_once('Connections/COnn2.php'); ?>
<?php
// *** Validate request to login to this site.
//////////when I delete this---if (!isset($_SESSION)) {
session_start();}-----it gets rid of the error messages but
when I logon I go the registration page either and not the logon
page,
$loginFormAction = $_SERVER['PHP_SELF'];
if (isset($_GET['accesscheck'])) {
$_SESSION['PrevUrl'] = $_GET['accesscheck'];
if (isset($_POST['firstname'])) {
$loginUsername=$_POST['firstname'];
$password=$_POST['lastname'];
$MM_fldUserAuthorization = "";
$MM_redirectLoginSuccess = "User_login.html";
$MM_redirectLoginFailed = "registration.html";
$MM_redirecttoReferrer = false;
mysql_select_db($database_COnn2, $COnn2);
$LoginRS__query=sprintf("SELECT id, f_name FROM auth_users
WHERE id='%s' AND f_name='%s'",
get_magic_quotes_gpc() ? $loginUsername :
addslashes($loginUsername), get_magic_quotes_gpc() ? $password :
addslashes($password));
$LoginRS = mysql_query($LoginRS__query, $COnn2) or
die(mysql_error());
$loginFoundUser = mysql_num_rows($LoginRS);
if ($loginFoundUser) {
$loginStrGroup = "";
//declare two session variables and assign them
$_SESSION['MM_Username'] = $loginUsername;
$_SESSION['MM_UserGroup'] = $loginStrGroup;
if (isset($_SESSION['PrevUrl']) && false) {
$MM_redirectLoginSuccess = $_SESSION['PrevUrl'];
header("Location: " . $MM_redirectLoginSuccess );
else {
header("Location: ". $MM_redirectLoginFailed );
?>
any suggestions??