From 7fe42e78c5bd4fdfbb3c95bbe29caf9856a6da43 Mon Sep 17 00:00:00 2001
From: Ad Schellevis <ad@opnsense.org>
Date: Wed, 19 Nov 2025 16:25:13 +0100
Subject: [PATCH] firewall_rule_lookup.php - support 0 as valid ruleid (2), for
 https://github.com/opnsense/core/pull/9423

---
 src/etc/inc/util.inc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/etc/inc/util.inc b/src/etc/inc/util.inc
index ad365f1edc..74c5dc9edd 100644
--- a/src/etc/inc/util.inc
+++ b/src/etc/inc/util.inc
@@ -916,7 +916,7 @@ function url_safe($format, $args = [])
 
     foreach ($args as $id => $arg) {
         /* arguments could be empty, so force default */
-        $args[$id] = !empty($arg) ? urlencode($arg) : '';
+        $args[$id] = urlencode($arg ?? '');
     }
 
     return vsprintf($format, $args);