title: PHP - how to protect the uploaded files directory
body: <p>i have a directory <code>public/1</code> where all the PDF, CSV files get uploaded by end users and they are very confidential files.</p>
  
  <p>now the url is publicly exposed such as: <a href="http://www.example.com/1" rel="nofollow">http://www.example.com/1</a></p>
  
  <p>how can i protect that specific URL not being exposed to public network?</p>