From d2c275e20aaf95dc97c6651416e78091350338cc Mon Sep 17 00:00:00 2001
From: Karson <karsonzhang@163.com>
Date: Fri, 16 Jun 2023 17:37:34 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BC=98=E5=8C=96=E6=A3=80=E6=B5=8B=E7=9A=84UR?=
 =?UTF-8?q?L=E9=BB=98=E8=AE=A4=E5=80=BC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 application/common.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/application/common.php b/application/common.php
index ba19f6c4..4b4d812e 100755
--- a/application/common.php
+++ b/application/common.php
@@ -502,13 +502,17 @@ if (!function_exists('check_url_allowed')) {
      * @param string $url URL
      * @return bool
      */
-    function check_url_allowed($url = null)
+    function check_url_allowed($url = '')
     {
         //允许的主机列表
         $allowedHostArr = [
             strtolower(request()->host())
         ];
 
+        if (empty($url)) {
+            return true;
+        }
+
         //如果是站内相对链接则允许
         if (preg_match("/^[\/a-z][a-z0-9][a-z0-9\.\/]+\$/i", $url) && substr($url, 0, 2) !== '//') {
             return true;