[SOLVED] redirect wont work

[phpSensei]

 

Alright, this is a login validation thing. When leaves the field empty, things redirect to right page. But when the login is a success, the page would not budge. Its like a blank page with nothing in it.

 

i even tried to echo something outside of the if/else, and still nothing.

 

why wont it redirect? NO ERRORS COME UP BTW.

 

 

 

 

<?php
   include("../config/connection.php"); // Set the connection file
									  //include our session handling file, make sure you have the right file name
session_start();
$action = $_GET['mode'];


switch($action){


case 'login':
$username = trim($_POST['username']);
$password = trim(md5($_POST['password']));
$cookie = $_POST['autologin'];
$redirect = $_POST['redirect'];

if(($username == "")||($password == "")){

header("LOCATION: ".$redirect."?error=001");


}
else
{
$username = strip_tags($username);
$password = strip_tags($password);
$username = mysql_real_escape_string($username);
$password = mysql_real_escape_string($password);

$row=mysql_fetch_array(mysql_query("SELECT * FROM ap_users WHERE ap_username = '$username' and ap_password = '$password'")) or die(mysql_error());
if(($row['ap_username']==$username)&&($row['ap_password']==$password)){


if(isset($cookie)){
/////////////////////////////////////
setcookie("ap_user",$username,time()+1000000000000000000000000000);
setcookie("ap_id",$row['ap_id'],time()+1000000000000000000000000000);
setcookie("session_logged_in",true,time()+1000000000000000000000000000);

header("LOCATION: ".$redirect);


}// end if cookie isset
////////////////////////////////////////

else
{
$_SESSION['username']==$username;
$_SESSION['user_id'] == $row['ap_id'];
$_SESSION['session_logged_in']== true;
header("LOCATION: ".$redirect);

}
/////////////////////////////////////////




}// end if password and username are correct
else
{

header("LOCATION: ".$redirect."?error=002");

}// end if username or password dont exsist
}// end else

break;
}// and case
?>