title: Warning: include(../../inc/functions.php): failed to open stream: no such file or directory
body: <p>This is the situation that I face off, the following is the structure of the site:</p>
  
  <pre><code> index.php
   /inc
      functions.php
   /css
   /img
   /connect
      db.class.php
      setup.php
   /admin
      index.php
      /img
      /css
      /inc
         functions.php
      /connect
         db.class.php
         setup.php 
      /content
         page.php
         /op
           add.php
           modify.php
           delete.php
  </code></pre>
  
  <p>I've tested using absolute and relative paths, <strong>DIR</strong>, $_SERVER['DOCUMENT_ROOT'], etc</p>
  
  <p>the problem is when I tried to include the functions.php file from the folder inc to the folder content or op. I've tested in some different ways and checks some answers from here I cannot fixed it.</p>
  
  <p>Could someone fix this issue? </p>