diff --git a/language/references.xml b/language/references.xml
index 0e18f190a4..9cd21d9080 100644
--- a/language/references.xml
+++ b/language/references.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.30 $ -->
+<!-- $Revision: 1.31 $ -->
  <chapter id="language.references">
   <title>References Explained</title>
 
@@ -117,6 +117,32 @@ echo "var2 is set to '$var2'\n"; // var2 is set to 'Example variable'
      to <literal>$var</literal> only changes the local variable's reference.
     </para>
    </warning>
+   <warning>
+    <para>
+     Complex arrays are sometimes rather copied than referenced. Thus following
+     example will not work as expected.
+     <example>
+      <title>References with complex arrays</title>
+      <programlisting role="php">
+<![CDATA[
+<?php
+$top = array(
+    'A' => array(),
+    'B' => array(
+        'B_b' => array(),
+    ),
+);
+
+$top['A']['parent'] = &$top;
+$top['B']['parent'] = &$top;
+$top['B']['B_b']['data'] = 'test';
+print_r($top['A']['parent']['B']['B_b']); // array()
+?>
+]]>
+      </programlisting>
+     </example>
+    </para>
+   </warning>
    <para>
     The second thing references do is to pass variables
     by-reference. This is done by making a local variable in a function and