diff --git a/language/types.xml b/language/types.xml
index c9f59644c3..dc58af33a6 100644
--- a/language/types.xml
+++ b/language/types.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.119 $ -->
+<!-- $Revision: 1.120 $ -->
  <chapter id="language.types">
   <title>Types</title>
 
@@ -2244,24 +2244,24 @@ $var = NULL;
 <?php 
 
 // simple callback example
-function foobar() {
-    echo "hello world!";
+function my_callback_function() {
+    echo 'hello world!';
 }
-call_user_func("foobar"); 
+call_user_func('my_callback_function'); 
 
 // method callback examples
-class foo {
-  function bar() {
-    echo "hello world!";
-  }
+class my_class {
+    function my_callback_method() {
+        echo 'hello world!';
+    }
 }
 
 // static class method call without instantiating an object
-call_user_func(array("foo", "bar")); 
+call_user_func(array('my_class', 'my_callback_method')); 
 
-$foo = new foo;
+$obj = new my_class;
 
-call_user_func(array($foo, "bar")); // object method call
+call_user_func(array(&$obj, 'my_callback_method')); // object method call
 
 
 ?>