From d4b043d72dd34722dfd7c12126e9bbc48ce83731 Mon Sep 17 00:00:00 2001
From: tianshujie <tianshujie0123@163.com>
Date: Fri, 26 Aug 2022 09:56:57 +0800
Subject: [PATCH] * Fix bug #26902.

---
 lib/front/front.class.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/front/front.class.php b/lib/front/front.class.php
index 2d68563605..a2026338ac 100644
--- a/lib/front/front.class.php
+++ b/lib/front/front.class.php
@@ -57,6 +57,7 @@ class html extends baseHTML
     {
         $id = "id='$name'";
         if(strpos($attrib, 'id=') !== false) $id = '';
+        if(is_null($value)) $value = '';
         $value = str_replace("'", '&#039;', $value);
         $autocomplete = $autocomplete ? 'autocomplete="on"' : 'autocomplete="off"';
         return "<input type='text' name='$name' {$id} value='$value' $attrib $autocomplete />\n";