<?php
$local_file = 'file.zip';
$download_file = 'name.zip';

// set the download rate limit (=> 20,5 kb/s)
$download_rate = 20.5;
if(file_exists($local_file) && is_file($local_file))
{
header('Cache-control: private');
header('Content-Type: application/octet-stream');
header('Content-Length: '.filesize($local_file));
header('Content-Disposition: filename='.$download_file);

flush();
$file = fopen($local_file, "r");
while(!feof($file))
{
    // send the current file part to the browser
    print fread($file, round($download_rate * 1024));
    // flush the content to the browser
    flush();
    // sleep one second
    sleep(1);
}
fclose($file);}
else {
die('Error: The file '.$local_file.' does not exist!');
}

?>
 
