How do I include a file over 2 directories back?

Question

How do you include a file that is more than 2 directories back. I know you can use ../index.php to include a file that is 2 directories back, but how do you do

Answer 1

including over directories can be processed by proxy file

• root
• .....|__web
• .....|.........|_requiredDbSettings.php
• .....|
• .....|___db
• .....|.........|_dbsettings.php
• .....|

• .....|_proxy.php

  dbsettings.php:
  $host='localhost';
  $user='username':
  $pass='pass';
  
  proxy.php:
  include_once 'db/dbsettings.php
  
  requiredDbSettings.php:
  include_once './../proxy.php';