<?php  // local file that should be send to the client  $local_file = 'test-file.zip';  // filename that the user gets as default  $download_file = 'your-download-name.zip';      // set the download rate limit (=> 20,5 kb/s)  $download_rate = 20.5;   if(file_exists($local_file) && is_file($local_file)) {      // send headers      header('Cache-control: private');      header('Content-Type: application/octet-stream');       header('Content-Length: '.filesize($local_file));      header('Content-Disposition: filename='.$download_file);          // flush content      flush();          // open file stream      $file = fopen($local_file, "r");          while(!feof($file)) {              // send the current file part to the browser          print fread($file, round($download_rate * 1024));                  // flush the content to the browser          flush();              // sleep one second          sleep(1);          }              // close file stream      fclose($file);}  else {      die('Error: The file '.$local_file.' does not exist!');  }  ?>