diff --git a/language/oop5/interfaces.xml b/language/oop5/interfaces.xml
index e0930aaf0a..ef86daeeaf 100644
--- a/language/oop5/interfaces.xml
+++ b/language/oop5/interfaces.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.11 $ -->
+<!-- $Revision: 1.12 $ -->
  <sect1 xml:id="language.oop5.interfaces" xmlns="http://docbook.org/ns/docbook">
   <title>Object Interfaces</title>
   <para>
@@ -44,6 +44,7 @@
      <programlisting role="php">
 <![CDATA[
 <?php
+
 // Declare the interface 'iTemplate'
 interface iTemplate
 {
@@ -84,7 +85,6 @@ class BadTemplate implements iTemplate
         $this->vars[$name] = $var;
     }
 }
-
 ?>
 ]]>
     </programlisting>
@@ -93,6 +93,7 @@ class BadTemplate implements iTemplate
     <title>Extendable Interfaces</title>
      <programlisting role="php">
 <![CDATA[
+<?php
 interface a
 {
     public function foo();
@@ -126,6 +127,45 @@ class d implements b
     {
     }
 }
+?>
+]]>
+     </programlisting>
+   </example>
+   <example xml:id="language.oop5.interfaces.examples.ex3">
+    <title>Multiple interface inheritance</title>
+     <programlisting role="php">
+<![CDATA[
+interface a
+{
+    public function foo();
+}
+
+interface b
+{
+    public function bar();
+}
+
+interface c extends a, b
+{
+    public function baz();
+}
+
+class d implements c
+{
+    public function foo()
+    {
+    }
+
+    
+    public function bar()
+    {
+    }
+
+    
+    public function baz()
+    {
+    }
+}
 ]]>
      </programlisting>
    </example>