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不是速度慢,而是我用PHP限制网速了!

时间:2012-12-14 09:54:00

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,估计会让老板发火,事情发展的会更糟……今天特此想大家推荐几行关于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($file)) {
   // send the current file part to the browser
  print fread($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!');
  }

 

来源:PHPchina

Notice: Constant RUNTIME already defined in /srv/html/srccn/news/config.php on line 15 Notice: Constant ROOTDIR already defined in /srv/html/srccn/news/config.php on line 16 Notice: Constant SITEDIR already defined in /srv/html/srccn/news/config.php on line 17 Notice: Constant DATAURL already defined in /srv/html/srccn/news/config.php on line 20 Notice: Constant VERSION already defined in /srv/html/srccn/news/system/kernel.php on line 17 Notice: Constant COREDIR already defined in /srv/html/srccn/news/system/kernel.php on line 18 Fatal error: require(): Cannot redeclare class mysql in /srv/html/srccn/news/system/kernel.php on line 22