Download File Using Php

Download File Using Php
I added the code to download the file using php. When we apply this concept, dont need to give the file dirctory to user.

<?php
function downloadfile($filepath){
   if(file_exists($filepath)){
         // Change it based on file extension or type
         $type="application/zip";
         header("Pragma: public");
         header("Content-Type: $type");
         header("Cache-Control: public");
         header("Content-Description: File Transfer");
         header("Content-Disposition: attachment;filename=\"".basename($filepath));
         header('Content-Length: '.filesize($filepath));
         header("Content-Transfer-Encoding: binary");
   header("Expires: 0");
         header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
         ob_clean();
         flush();
         readfile($filepath);
}

}
 ?>