Sessions in PHP

Hello there,
I have been busy building a login system lately, and now everything but 1 thing works.
So when you are logged in you should be redirected to home.php, and when you are not logged in you should be redirected to index.php, so i came with this bit of code:

<?php
session_start();
if($_SESSION["login_user"] = true)
{
?>

//html goes in here

<?php
}
else {
header("location: /index.php");
}
?>

PHP:

but i wouldnt have come here if this worked. Here is the problem: it throws the system into an infinite loop, until chrome terminates it... so i made a logout.php to end any session that may be there (at least i think)

<?php
session_start();
session_destroy();
?>

PHP:

Doesnt fix anything...

So, could somebody check these 2 items out, and tell me what i am doing wrong?
(if anybody needs it:
not logged in homepage: /index.php
logged in homepage: /home.php
logout page: /logout.php
login code: /login.php

thankyou in advance!

 

You're not checking the $_SESSION['login_user'], you're assigning it.

Change the first line to:

if ($_SESSION['login_user'] == true) {

Code (markup):

 

On top:

if ( !isset($_SESSION["login_user"] ) {
header("location: /index.php");
}
...........
then here is the script

more elegant! )