/**
 * 功能：加密方法
 * @param string $params 加密字串
 * @param string $appkey 加密鹽值
 * @return string
 */
function checkSign($params, $appkey = 'JTIzQCV1RkYwMSV1ODA1QSV1NzBCOSV1NEU5MiV1NTJBOCV1RYwMUAlMjM=')
{
    //header("Content-Type: text/html; charset=utf-8");
    //AppKey 資訊，請替換
    define('APPKEY', $appkey);
    //按照引數名排序
    ksort($params);
    //字串常量
    $codes = APPKEY;
    //連線待加密的字串
    while (list($key, $val) = each($params)) {
        //\Think\Log::write('陣列日誌：key：'.$key . '--val：'.$val,'WARN');      //列印日誌
        $codes .= ($key . $val);
    }
    //將字串sha1加密後，轉換為大寫
    $data['sign'] = md5($codes);
    $data['codes'] = $codes;
    //$sign = strtoupper(sha1($codes));
    return $data['sign'];
}