php控制文件下载速度
时间：2021-07-01 10:21:17
帮助过：3人阅读
- /* set here a limit of downloading rate (e.g. 10.20 Kb/s) */
- $download_rate = 10.20;
-
- $download_file = 'download-file.zip';
- $target_file = 'target-file.zip';
-
- if(file_exists($download_file)){
- /* headers */
- header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
- header('Cache-control: private');
- header('Content-Type: application/octet-stream');
- header('Content-Length: '.filesize($download_file));
- header('Content-Disposition: filename='.$target_file);
-
- /* flush content */
- flush();
-
- /* open file */
- $fh = @fopen($download_file, 'r');
- while(!feof($fh)){
- /* send only current part of the file to browser */
- print fread($fh, round($download_rate * 1024));
- /* flush the content to the browser */
- flush();
- /* sleep for 1 sec */
- sleep(1);
- }
- /* close file */
- @fclose($fh);
- }else{
- die('Fatal error: the '.$download_file.' file does not exist!');
- }
- ?>
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下载速度, php
