redirecting with if statment based on cookie using header('location:') gives weird error in firefox

Question

Hi. I am trying to redirect my visitors to for example http://localhost/site/test.php?lang=en_USbased on the country code in the cookie like this:

if (isset($_COOKIE['country'])) 
{
        $country = $_COOKIE['country'];
        header('Location: test.php?lang=en_US');  

        if ($country == "NO"){              
        header('Location: test.php?lang=no_NO');    
        }                       
}
else
{
    header('Location: test.php?lang=en_US');  
}

But i get this weird error in firefox: The page isn't redirecting properly

Found a solution:

if (!isset($_GET['lang']))
{

        if (isset($_COOKIE['country'])) 
        {
                $country = $_COOKIE['country'];
                $redirect = "en_US";

                if ($country == "NO"){              
                $redirect = "no_NO";    
                header('Location: crime.php?lang='.$redirect); 
                }   

                if ($country == "EN"){              
                $redirect = "en_US";    
                header('Location: crime.php?lang='.$redirect); 
                }   

        }
        else
        {
            header('Location: crime.php?lang=en_US'); 
        }


}       

Answer 1

The problem is that it is unconditionally redirecting, and always to itself, causing an infinite loop which Firefox detects and stops. You need to add conditions to prevent redirects once the final page has been reached.