php下载文件，添加响应头

//下载,添加响应头信息
header('Content-type:application/octet-stream');
header('Content-Disposition:attachment;filename="'.basename($file).'"');
header('Content-Length:'.filesize($file));
readfile($file);

转载于:https://www.cnblogs.com/D-Chen/p/5859573.html