From a843c61da65b69814c2254688c69d229505b9ae1 Mon Sep 17 00:00:00 2001
From: eecjimmy <eecjimmy@users.noreply.github.com>
Date: Wed, 16 Mar 2022 15:20:03 +0800
Subject: [PATCH] Set the default  to an array (#19306)

---
 framework/base/ActionFilter.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/framework/base/ActionFilter.php b/framework/base/ActionFilter.php
index 10d745a3b2e..b39c75826d1 100644
--- a/framework/base/ActionFilter.php
+++ b/framework/base/ActionFilter.php
@@ -36,7 +36,7 @@ class ActionFilter extends Behavior
      *
      * @see except
      */
-    public $only;
+    public $only = [];
     /**
      * @var array list of action IDs that this filter should not apply to.
      * @see only