Speed Limit Download of File
A simple and effective way to limit the rate at which a file is downloaded. Good for user level file transfers. If you still want to allow guests to download files at a slower speed this might be the answer.
Snippet:
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<?
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// speed is in kB/s
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// $dst_filename is what the user gets
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// $src_filename is the file on the server
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// http://thedevnet.com/php/snippets/speed-limit-download-of-file/
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function dl_speedcap($src_filename, $dst_filename, $speed)
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{
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// local file
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$local_file = $src_filename;
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// filename that the user gets
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$download_file = $dst_filename;
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// set the speed
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$download_rate = $speed;
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if(file_exists($local_file) && is_file($local_file))
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{
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// send headers
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header('Cache-control: private');
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header('Content-Type: application/octet-stream');
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header('Content-Length: '.filesize($local_file));
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header('Content-Disposition: filename='.$download_file);
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// flush content
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flush();
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// open file stream
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$file = fopen($local_file, "r");
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while(!feof($file)) {
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// send the current file part to the browser
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print fread($file, round($download_rate * 1024));
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// flush the content to the browser
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flush();
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// sleep one second
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sleep(1);
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}
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// close file stream
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fclose($file);
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}
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else
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{
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die('Error: The file '.$local_file.' does not exist!');
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}
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}
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?>
Example:
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<?
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dl_speedcap("myfile.zip", "theirfile.zip", "8");
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?>
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Originally posted 2009-10-17 02:55:08.
Popularity: 12%
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7:58 am
perhaps a modification that would allow slower media downloading might be possible with this snippet
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