Added a note about private and protected methods to callables

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@338094 c90b9560-bf6c-de11-be94-00142212c4b1

language/types/callable.xml

@@ -2,7 +2,7 @@
 <!-- $Revision$ -->
 <sect1 xml:id="language.types.callable">
  <title>Callbacks / Callables</title>
- 
+
  <para>
   Callbacks can be denoted by <type>callable</type> type hint as of PHP 5.4.
   This documentation used <type>callback</type> type information for the same
@@ -23,8 +23,8 @@
    A PHP function is passed by its name as a <type>string</type>. Any built-in
    or user-defined function can be used, except language constructs such as:
    <function>array</function>, <function>echo</function>,
-   <function>empty</function>, <function>eval</function>, 
-   <function>exit</function>, <function>isset</function>, 
+   <function>empty</function>, <function>eval</function>,
+   <function>exit</function>, <function>isset</function>,
    <function>list</function>, <function>print</function> or
    <function>unset</function>.
   </para>
@@ -32,7 +32,8 @@
   <para>
    A method of an instantiated <type>object</type> is passed as an
    <type>array</type> containing an <type>object</type> at index 0 and the
-   method name at index 1.
+   method name at index 1. Accessing protected and private methods from
+   within a class is allowed.
   </para>
 
   <para>
@@ -56,7 +57,7 @@
     </title>
     <programlisting role="php">
 <![CDATA[
-<?php 
+<?php
 
 // An example callback function
 function my_callback_function() {
@@ -71,10 +72,10 @@ class MyClass {
 }
 
 // Type 1: Simple callback
-call_user_func('my_callback_function'); 
+call_user_func('my_callback_function');
 
 // Type 2: Static class method call
-call_user_func(array('MyClass', 'myCallbackMethod')); 
+call_user_func(array('MyClass', 'myCallbackMethod'));
 
 // Type 3: Object method call
 $obj = new MyClass();
@@ -128,8 +129,8 @@ $double = function($a) {
 // This is our range of numbers
 $numbers = range(1, 5);
 
-// Use the closure as a callback here to 
-// double the size of each element in our 
+// Use the closure as a callback here to
+// double the size of each element in our
 // range
 $new_numbers = array_map($double, $numbers);
 
@@ -159,7 +160,7 @@ print implode(' ', $new_numbers);
  </sect2>
 
 </sect1>
- 
+
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