Microweber\Utils\Adapters\Http\Curl::getMimeType PHP Метод

    private function getMimeType($fn)
    {
        $filename = $fn;
        $dots = explode('.', $filename);
        $ext = strtolower(end($dots));
        if (array_key_exists($ext, $this->mimeTypes)) {
            return $this->mimeTypes[$ext];
        } elseif (function_exists('finfo_open')) {
            $finfo = finfo_open(FILEINFO_MIME);
            $mimetype = finfo_file($finfo, $filename);
            finfo_close($finfo);
            return $mimetype;
        } else {
            return 'application/octet-stream';
        }
    }