diff --git a/language/operators.xml b/language/operators.xml
index 40efd26e01..fcf5576214 100644
--- a/language/operators.xml
+++ b/language/operators.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.66 $ -->
+<!-- $Revision: 1.67 $ -->
  <chapter id="language.operators">
   <title>Operators</title>
   <simpara>
@@ -882,7 +882,10 @@ var_dump($a === $b); // bool(false)
     object is of a specified <link linkend="language.oop">object class</link>.
    </para>
    <simpara>
-    <literal>instanceof</literal> was introduced in PHP 5.
+    The <literal>instanceof</literal> operator was introduced in PHP 5.
+    Before this time <function>is_a</function> was used but
+    <function>is_a</function> has since been deprecated in favor of
+    <literal>instanceof</literal>. 
    </simpara>
    <informalexample>
     <programlisting>
@@ -903,11 +906,15 @@ if ($thing instanceof B) {
 ]]>
     </programlisting>
     <simpara>
-     As <literal>$thing</literal> is an object of type A, but not B, only the block
-     dependent on the A type will be executed:
+     As <literal>$thing</literal> is an <type>object</type> of type A, but
+     not B, only the block dependent on the A type will be executed:
     </simpara>
     <screen>A</screen>
    </informalexample>
+   <para>
+    See also <function>get_class</function> and 
+    <function>is_a</function>.
+   </para>
   </sect1>
  </chapter>