private function response($text)
{
$headers = explode("\r\n", $text);
$items = [];
foreach ($headers as $header) {
$header = trim($header);
if (strpos($header, 'x-upyun') !== false) {
list($k, $v) = explode(':', $header);
$items[trim($k)] = in_array(substr($k, 8, 5), ['width', 'heigh', 'frame']) ? intval($v) : trim($v);
}
}
return $items;
}