From 1a059dbbe2380e9ae752daf6c5583333b5bd5f07 Mon Sep 17 00:00:00 2001
From: Brad Jorsch <bjorsch@wikimedia.org>
Date: Mon, 23 Jun 2014 13:03:53 -0400
Subject: [PATCH] GlobalVarConfig shouldn't throw exceptions for null-valued
 config settings

Use array_key_exists rather than isset to test $GLOBALS.

Bug: 66986
Change-Id: I9beabd79e1d52966b9184c9647af5a2a31c19276
---
 includes/config/GlobalVarConfig.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/includes/config/GlobalVarConfig.php b/includes/config/GlobalVarConfig.php
index 61a76b7617..0d7f3f06c9 100644
--- a/includes/config/GlobalVarConfig.php
+++ b/includes/config/GlobalVarConfig.php
@@ -69,7 +69,7 @@ class GlobalVarConfig implements Config {
 	 */
 	protected function getWithPrefix( $prefix, $name ) {
 		$var = $prefix . $name;
-		if ( !isset( $GLOBALS[ $var ] ) ) {
+		if ( !array_key_exists( $var, $GLOBALS ) ) {
 			throw new ConfigException( __METHOD__ . ": undefined variable: '$var'" );
 		}
 		return $GLOBALS[ $var ];
-- 
2.20.1