Simplifying PHP if's and arrays
<p>I have a piece of code I just wrote that detects if there is a user logged in and if [1] and [2] have any specific text in the string and then will relocate that person to another page if the values are met.</p>

<p>But I think my code is a little long winded. Is there a way to simplify what I have or is this the best I'll get?</p>

<pre><code>if (!isset($_SESSION['user_id'])){  
    $dir =  dirname($_SERVER['PHP_SELF']);
    $dirs = explode('/', $dir);
    if(isset($dirs[1])){
        if (($dirs[1] == "account") || ($dirs[1] == "admin")){
            header('Location: /');
        }
    }
    if(isset($dirs[2])){
        if(($dirs[2] == "account")){
            header('Location: /');
        }
    }
}
</code></pre>

<p>Thanks in advance</p>
