PHP Directory-specific Content and Redirects

I have this code

$pageEx = explode("/", $_SERVER['PHP_SELF']);
            $pageLn = count($pageEx);
            $currentdir = $pageEx[$pageLn - 2];

            switch($currentdir) {
                case "admin":
                    if(!$this->loggedIn) {
                        header("Location: index.php");
                    }
                    if($this->userData['user_level'] < 3) {
                        header("Location: ../index.php");开发者_高级运维
                    }
                break;

                case "mgmt":
                    if(!$this->loggedIn) {
                        header("Location: index.php");
                    }
                    if($this->userData['user_level'] < 2) {
                        header("Location: ../index.php");
                    }
                break;

                case "user":
                    if(!$this->loggedIn) {
                        header("Location: index.php");
                    }
                    if($this->userData['user_level'] < 1) {
                        header("Location: ../index.php");
                    }
                break;
            }

and was just wondering whether there's a shorter way I could do it?

The code works, but its a lot of code for something so simple.

It checks the directory they're in then if they aren't the right user_level it redirects them to the index page.

Edit: Done it.

$pageEx = explode("/", $_SERVER['PHP_SELF']);
            $pageLn = count($pageEx);
            $currentdir = $pageEx[$pageLn - 2];


            /*
                User Level Required => Directory
            */
            $permissions = array(
                1 => 'user',
                2 => 'mgmt',
                3 => 'admin'
            );

            foreach($permissions as $perms => $key) {
                if(!$this->loggedIn) {
                    header("Location: ../index.php");
                }
                if($currentdir == $key) {
                    if($perms > $this->userData['user_level']) {
                        header("Location: ../index.php");
                    }
                }
            }

How about this?

$pageEx = explode("/", $_SERVER['PHP_SELF']);
$pageLn = count($pageEx);
$currentdir = $pageEx[$pageLn - 2];

if(!$this->loggedIn) {
    header("Location: index.php");
}

$permissions = array(
    'admin' => 3,
    'mgmt' => 2,
    'user' => 1,
);

if($this->userData['user_level'] < $permissions[$currentdir]) {
    header("Location: ../index.php");
}

UPDATE: I just noticed you wanted to do a LESS THAN... so I updated the code to reflect the way it works in your code.

You might cringe at this, but you could get it down to 6 lines if the long if statement doesn't bother you...

$pageEx = explode("/", $_SERVER['PHP_SELF']);
$currentdir = $pageEx[count($pageEx) - 2];

if(!$this->loggedIn)
    header("Location: index.php");
elseif(($currentdir == "admin" && $this->userData['user_level'] < 3) || ($currentdir == "mgmt" && $this->userData['user_level'] < 2) || ($currentdir == "user" && $this->userData['user_level'] < 1))
    header("Location: ../index.php");

Note the change to an elseif because--and correct me if I'm mistaken--either the user is not logged in and gets redirected to index.php or the user is logged in and might get directed to ../index.php. If they were separate if statements, it seems there could end up being two Location headers.