From 90380fd9d4ef72f926e76f487b924d803e34c1d9 Mon Sep 17 00:00:00 2001
From: Daniel Doyle <tr33m4n@googlemail.com>
Date: Tue, 16 Nov 2021 10:08:04 +0000
Subject: [PATCH] Fix `isset` returning `false` if data collection key had
 `null` value

---
 src/Data/DataCollection.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Data/DataCollection.php b/src/Data/DataCollection.php
index 68d6127..9af59a9 100644
--- a/src/Data/DataCollection.php
+++ b/src/Data/DataCollection.php
@@ -71,7 +71,7 @@ public function add(array $keyValuePairs): DataCollectionInterface
      */
     public function has(string $key): bool
     {
-        return isset($this->data[$key]);
+        return array_key_exists($key, $this->data);
     }
 
     /**