File download with rename and speed limit

File download with rename and speed limit

I have seen some site provide download limit when download a file from the site. From this technique I am inspire to write the function. This function allow download file with rename and download speed limit.

<?php /** * This function allow download a file with speed limit * $local_file = test-file.zip; local file that should be send to the client * $download_file = your-download-name.zip; filename that the user gets as default * $download_rate = 20.5; set the download rate limit (=> 20,5 kb/s) * * @param string $local_file * @param string $download_file * @param float $download_rate */ function downloadFileWithSpeedLimit($local_file, $download_file, $download_rate ){ if(file_exists($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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