From 37036f13a797507de771c1ab35466d39b4ef39bb Mon Sep 17 00:00:00 2001
From: Torben Wilson <torben@php.net>
Date: Wed, 26 Aug 2009 06:34:00 +0000
Subject: [PATCH] Clarified what will happen when attempting to access an
 undefined array index. Addresses Bug #49202.

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@287729 c90b9560-bf6c-de11-be94-00142212c4b1
---
 language/types/array.xml | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/language/types/array.xml b/language/types/array.xml
index 5c38444ab0..894986018e 100644
--- a/language/types/array.xml
+++ b/language/types/array.xml
@@ -69,6 +69,15 @@ echo $arr[12];    // 1
     A value can be any PHP type.
    </para>
 
+   <note>
+    <para>
+      Attempting to access an array key which has not been defined is
+      the same as accessing any other undefined variable:
+      an <constant>E_NOTICE</constant>-level error message will be
+      issued, and the result will be <literal>NULL</literal>.
+    </para>
+   </note>
+
    <informalexample>
     <programlisting role="php">
 <![CDATA[