php限制文件下载速度
时间：2021-07-01 10:21:17
帮助过：4人阅读
- // 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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下载速度, php
