From f858668ad4c5fc38bac149c21119bd7fa73c9e1e Mon Sep 17 00:00:00 2001
From: gongfuxiang <fuxiang.gong@qq.com>
Date: Thu, 19 May 2022 22:47:05 +0800
Subject: [PATCH] =?UTF-8?q?=E5=8A=A0=E5=AF=86=E5=87=BD=E6=95=B0php8?=
 =?UTF-8?q?=E4=B8=8B=E9=94=99=E8=AF=AF=E4=BF=AE=E5=A4=8D?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 app/common.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/common.php b/app/common.php
index 44e2c5f12..d74c47d1c 100755
--- a/app/common.php
+++ b/app/common.php
@@ -2608,7 +2608,8 @@ function Authcode($string, $operation = 'DECODE', $key = '', $expiry = 0)
         // substr($result, 0, 10) - time() > 0 验证数据有效性
         // substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16) 验证数据完整性
         // 验证数据有效性，请看未加密明文的格式
-        if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16)) {
+        if($result !== '' && $result !== null && (substr($result, 0, 10) == 0 || intval(substr($result, 0, 10)) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16))
+        {
             return substr($result, 26);
         } else {
             return '';