title: Accessing $_SERVER['DOCUMENT_ROOT'] value in .htaccess file
body: <p>I need the path specified in $_SERVER['DOCUMENT_ROOT'] to be accessible in .htaccess file.
  Is there a way to access it there? </p>
  
  <p>I basically need to point to a file kept at the root and need the actual file system path and not the URL path. So instead of using a hard coded value, I'd like to be able to use a variable.</p>
  
  <p>Thanks. </p>