济宁网站建设:jnhuiteng
PHP限制网速的代码
各位做运维和开发的童鞋,会经常遇到一个问题,那就是有人在办公室下载东西,网速自然而然地被拉下来了,影响大家上网、办公。同样的
问题,要是出现在了服务器上面,事情发展的会更糟……今天济宁网站建设给大家推荐几行关于
PHP限制网速的代码,希望给大家一些帮助。 [代码] [PHP]代码
// 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($file)) {
济宁辉腾电子商务:jnhuiteng/dzsw/
济宁网站建设:jnhuiteng
// send the current file part to the browser print fread($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!'); }(详细请咨询济宁网站建设--济宁辉腾电子商务)
济宁辉腾电子商务:jnhuiteng/dzsw/