From 75fe055826146493c78a331e74893b3bee103658 Mon Sep 17 00:00:00 2001
From: z <wyd621@163.com>
Date: Mon, 13 Jul 2020 16:15:35 +0800
Subject: [PATCH]  * finish task #11727.

---
 framework/control.class.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/framework/control.class.php b/framework/control.class.php
index 4240389815..e5f40b99f0 100644
--- a/framework/control.class.php
+++ b/framework/control.class.php
@@ -319,6 +319,7 @@ class control extends baseControl
             foreach($fieldRules as $ruleID)
             {
                 if(!isset($rules[$ruleID])) continue;
+                if(!is_string($_POST[$field->field])) continue;
 
                 $rule = $rules[$ruleID];
                 if($rule->type == 'system' and $rule->rule == 'notempty')