downloading file in PHP

Question

I'm trying to create a temporary download link for download files. my code is:

$file_temp_adrs = "temp/".md5(microtime());
mkdir($file_temp_adrs);
$file_temp_adr = $file_temp_adrs."/".$fileinfo['org_filename'];
$file_org_adr = "files/".$fileinfo['filename'];
copy($file_org_adr , $file_temp_adr);

$finfo = finfo_open(FILEINFO_MIME_TYPE);
$mime_type = finfo_file($finfo, $file_temp_adr);
finfo_close($finfo);
$name = basename($file_temp_adr);
$size = filesize($file_temp_adr);


header("Content-Disposition: attachment; filename=\"".$name."\"");
header("Content-Type: $mime_type");
header("Content-Length: $size");
header("Connection: close");

When i click on download button, the browser saves a file with true name and extention but the file size is 0KB that is not usable. where is wrong?

Answer 1

我认为您实际上并没有提供文件内容，应该使用readfile输出文件内容：

readfile($file_temp_adr);