Swoole\Image::thumb_name PHP 메소드

    static function thumb_name($file_name, $insert = 'thumb')
    {
        $dirname = dirname($file_name);
        $file_name = basename($file_name);
        $extend = explode(".", $file_name);
        return $dirname . '/' . $extend[0] . '_' . $insert . '.' . $extend[count($extend) - 1];
    }