keep getting this error and have no clu as to why. cod copied and pasted from my lecturers example. help much appricated.

<?php
session_start();
ini_set('arg_separator.output',';');
$con = mysql_connect("host","database","password");
if (!$con)
{
die('Could not connect: ' . mysql_error());
}
mysql_select_db("a6005321", $con);

// process log in form
if (isset($_POST['login'])){
if (!empty($_POST['user'])){
$user = $_POST['user'];
}
if (!empty($_POST['password'])){
$password = $_POST['password'];
}

// query whether there is a user with $usr for username and $pwd for password in the users database
$result = mysql_query("SELECT * FROM users WHERE user = '$user'");
while($row = mysql_fetch_array($result))
{
$password = $row['password'];
$user = $row['user'];
}
if($user){
if($password != 'Password'){
if ( $_POST['password']) == "$password"){ <-----doesnt like ==
$_SESSION['user'] = $_POST['user'];

setcookie("user", $user, time()+3600);
}
}
}
mysql_close($con);
}
// log out
if (isset($_GET['logout'])){
unset($_SESSION['user']);
session_destroy();
setcookie("user", "", time()-3600);
}
?>

if ( $_POST['password']) == "$password"){ <-----doesnt like ==

thank you so much that worked worked

i think i mite have another for u