title: How to get grandparent directory with PHP
body: <p>I have a following directory structure.</p>
  
  <pre><code>-webshop
     -controllers
        -webshop.php
  </code></pre>
  
  <p>In webshop.php I want to get webshop which is the grandparent of this file.</p>
  
  <p>If I use the following I think I get 'controllers'.</p>
  
  <pre><code>echo basename(dirname(__FILE__)); // this will get controllers
  </code></pre>
  
  <p>How can I get the grandparent directory?</p>
  
  <p>Thanks in advance.</p>