复制代码 代码如下:
// 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!");
}
