From 554e43aae4b8696c9a288786278788774a6f9585 Mon Sep 17 00:00:00 2001
From: Jakub Vrana <jakub@vrana.cz>
Date: Tue, 3 Feb 2026 08:13:01 +0100
Subject: [PATCH] Fix warning for unset enum value

---
 adminer/include/html.inc.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/adminer/include/html.inc.php b/adminer/include/html.inc.php
index 49ae8f86..d8b0cfc6 100644
--- a/adminer/include/html.inc.php
+++ b/adminer/include/html.inc.php
@@ -311,8 +311,8 @@ function process_input(array $field) {
 	$function = idx($_POST["function"], $idf);
 	$value = idx($_POST["fields"], $idf);
 	if ($field["type"] == "enum" || driver()->enumLength($field)) {
-		$value = $value[0];
-		if ($value == "orig") {
+		$value = idx($value, 0);
+		if ($value == "orig" || !$value) {
 			return false;
 		}
 		if ($value == "null") {