function buildRequestMysign($para_sort) {
						$prestr = createLinkstring($para_sort);
				$mysign = "";
		switch (strtoupper(trim($this->llpay_config['sign_type']))) {
			case "MD5" :
				$mysign = md5Sign($prestr, $this->llpay_config['key']);
				break;
			default :
				$mysign = "";
		}
		true === DEBUG_LIANLIANPAY && file_put_contents(ROOT_PATH . "errorlog/pay.lianlianpay.".date("Ym").".log","签名:".$mysign."\n", FILE_APPEND);
		return $mysign;
	}

 function buildRequestMysign($para_sort)
 {
     $prestr = createLinkstring($para_sort);
     $mysign = "";
     switch (strtoupper(trim($this->alipay_config['sign_type']))) {
         case "MD5":
             $mysign = md5Sign($prestr, $this->alipay_config['key']);
             break;
         default:
             $mysign = "";
     }
     return $mysign;
 }

 /**
  * 生成签名结果
  * @param $para_sort 已排序要签名的数组
  * return 签名结果字符串
  */
 public function buildRequestMysign($para_sort)
 {
     //把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串
     $prestr = createLinkstring($para_sort);
     $mysign = "";
     switch (strtoupper(trim($this->alipay_config['sign_type']))) {
         case "MD5":
             $mysign = md5Sign($prestr, $this->alipay_config['key']);
             break;
         default:
             $mysign = "";
     }
     return $mysign;
 }

 /**
  * 生成签名结果 添加MD5校验
  * @param $para_sort 已排序要签名的数组
  * return 签名结果字符串
  */
 function buildRequestMysign($para_sort)
 {
     //把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串
     $prestr = createLinkstring($para_sort);
     $mysign = "";
     switch (strtoupper(trim($this->alipay_config['sign_type']))) {
         case "RSA":
             $mysign = rsaSign($prestr, $this->alipay_config['private_key_path']);
             break;
         case 'MD5':
             $mysign = md5Sign($prestr, $this->alipay_config['key']);
             break;
     }
     return $mysign;
 }

 /**
  * 生成签名结果
  * @param $para_sort 已排序要签名的数组
  * return 签名结果字符串
  */
 function buildRequestMysign($para_sort)
 {
     //把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串
     $prestr = createLinkstring($para_sort);
     $mysign = "";
     switch (strtoupper(trim($this->llpay_config['sign_type']))) {
         case "MD5":
             $mysign = md5Sign($prestr, $this->llpay_config['key']);
             break;
         case "RSA":
             $mysign = RsaSign($prestr);
             break;
         default:
             $mysign = "";
     }
     file_put_contents("log.txt", "签名:" . $mysign . "\n", FILE_APPEND);
     return $mysign;
 }

/**
 * 验证签名
 * @param $prestr 需要签名的字符串
 * @param $sign 签名结果
 * @param $key 私钥
 * return 签名结果
 */
function md5Verify($prestr, $sign, $key)
{
    return md5Sign($prestr, $key) == $sign;
}

function buildRequestMysign($para_sort, $md5)
{
    //把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串
    $prestr = createLinkstring($para_sort);
    $mysign = md5Sign($prestr, $md5);
    return $mysign;
}