title: Can't reach index.php in /en/ subfolder
body: <p>I was asked to continue developing a website that was left behind.</p>
  
  <p>Runs on a simple custom PHP backend CMS where you can add products, pages, change logo and other few basic operations.</p>
  
  <p>Database: MySQL</p>
  
  <p>Both frontend and backend works.</p>
  
  <p>The website supposed to be multilanguage (it, en).
  This is my folder structure:</p>
  
  <pre><code>--root
    --admin (backend CMS)
    --css
    --en
        --index.php (EN second language)
    --images
    --includes
    --js
  index.php (IT main language)
  products-category.php
  .htaccess
  </code></pre>
  
  <p>This is my <strong>.htaccess</strong></p>
  
  <pre><code>RewriteEngine Off
  </code></pre>
  
  <p>I can reach both <strong>index.php</strong> (Main language) and admin CMS but when I go to <strong>/en/index.php</strong> redirects you to the <strong>products-category.php</strong> (Main language)</p>
  
  <p>Who can help me understand what I'm missing?</p>
  
  <p>Thanks</p>
  
  <p><strong>EDIT</strong></p>
  
  <p>This is my <code>/en/index.php</code></p>
  
  <pre class="lang-php prettyprint-override"><code>&lt;?php
  session_start();
  $_SESSION['lang']='en';
  require_once("../admin/config.php");
  require_once("../include/function.php");
  $page='home';
  $language_file='';
  $pop_up_modal_newsletter='no';
  
  ?&gt;
  &lt;!DOCTYPE html&gt;
  &lt;html lang="en"&gt;
  ** WEBSITE HTML **
  </code></pre>
  
  <p><strong>EDIT 2</strong></p>
  
  <p>I copied the entire site and database on a XAMPP environment and everything works great, I can access every page inside the subfolder /en/</p>
  
  <p>So I think it's a server issue, right?</p>