The {Code} Cookbook

PHP Limit File Download Speed

By gilbitron in PHP on 23/02/2009 at 06:51

Views: 1020
Tagged: php, download, file
URL: http://www.jonasjohn.de/snippets/php/dl-speed-limit.htm

Starter:

This snippet shows you how to limit the download rate of a file download.

Main Course:

// 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!');
}

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Compliments to the Chef

1. Comment by splatzone on 24/02/2009 at 09:23

   Very handy, but this sorta stuff always annoys me in websites. I hate PHP downloads! :P
   
   Is there a way to do it with htaccess?

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