HELP in !

I have a code like

<?php
if(!$session->is_logged_in()){ redirect_to('panel.php');}
?>

here $session is an instance of the Session class and is_logged_in() is a method i.e a public method in the Session class
here is a bit of code provided

class Session{

private $logged_in;
public $user_id;

function __construct()
{
session_start();
$this->check_login();
}

public function is_logged_in()
{
return $this->logged_in;
}



when is open the page by providing the url like localhost/../..admin/panel.php which contains the: <?php
if(!$session->is_logged_in()){ redirect_to('panel.php');}
?>

the page donot open in the browser window bbut when i remove the ! from the: <?php
if(!$session->is_logged_in()){ redirect_to('panel.php');}
?>

then the page opens. Can any one tell me that

is <?php
if(!$session->is_logged_in()){ redirect_to('panel.php');}
?> a wrong expression?

 

You should provide your entire session class so that others can check your other class functions

 

Try a bit of debugging, like this...

First whether $session->is_logged_in() work fine:

if(!$session->is_logged_in()){ die('Not logged in!'); }

If you can see the message then it's fine.

The try and see if it's the redirect function without the clause:

redirect_to('panel.php');

One of them is probably failing.