From de07f588c14452e69e0ec2e557739657f3b95892 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andreas=20M=C3=B6ller?= <am@localheinz.com>
Date: Wed, 27 Dec 2017 19:49:32 +0100
Subject: [PATCH] Fix: Use array_key_exists() instead of isset()

---
 src/Composer/Json/JsonManipulator.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Composer/Json/JsonManipulator.php b/src/Composer/Json/JsonManipulator.php
index f929732fe..cdd22c817 100644
--- a/src/Composer/Json/JsonManipulator.php
+++ b/src/Composer/Json/JsonManipulator.php
@@ -417,7 +417,7 @@ class JsonManipulator
     {
         $decoded = JsonFile::parseJson($this->contents);
 
-        if (!isset($decoded[$key])) {
+        if (!array_key_exists($key, $decoded)) {
             return true;
         }