php下载远程大文件(获取远程文件大小)的实例

php;"> php // 暂不支持断点续传 // $url = 'http://www.myTest.com/debian.iso'; 不知道为何获取本地文件大小为0 $url = 'http://192.168.8.93/download/vm-672/18/0.vmdk'; $file = basename($url); $header = get_headers($url,1); $size = $header['Content-Length'];

$fp = fopen($url,'rb');
if ($fp === falsE) exit('文件不存在或打开失败');

header('Content-Description: File Transfer');
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="'.$file.'"');
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate,post-check=0,pre-check=0');
header('Pragma: public');
header('Content-Length: ' . $sizE);

ob_clean();
ob_end_flush();
set_time_limit(0);

$chunkSize = 1024 * 1024;
while (!feof($fp)) {
$buffer = fread($fp,$chunkSizE);
echo $buffer;
ob_flush();
flush();
}
fclose($fp);
exit;