static function download($data, $save_name, $is_path = false)
{
$extension = preg_replace('/.*\\./', '', $save_name);
$mime_type = config($extension, 'mime_type');
empty($mime_type) and $mime_type = 'application/octet-stream';
$file_name = help::process_download_file_name($save_name);
if ($is_path) {
if (is_file($data) && ($fp = fopen($data, 'rb')) !== false) {
self::send_download_file_header($mime_type, filesize($data), $file_name);
if (ob_get_level() !== 0 && ob_end_clean() === false) {
ob_clean();
}
while (!feof($fp) && ($source = fread($fp, 1048576)) !== false) {
echo $source;
}
fclose($fp);
exit;
}
throw new Exception('read download file fail', 108);
}
self::send_download_file_header($mime_type, strlen($data), $file_name);
exit($data);
}