Index: en/reference/strings/functions/strlen.xml
===================================================================
--- en/reference/strings/functions/strlen.xml	(revision 330489)
+++ en/reference/strings/functions/strlen.xml	(working copy)
@@ -13,7 +13,7 @@
    <methodparam><type>string</type><parameter>string</parameter></methodparam>
   </methodsynopsis>
   <para>
-   Returns the length of the given <parameter>string</parameter>.
+   Returns the length of the given <parameter>string</parameter> measured in bytes.
   </para>
  </refsect1>
 
@@ -81,6 +81,26 @@
 ]]>
     </programlisting>
    </example>
+   <example>
+    <title>A <function>strlen</function> example using multi-byte characters</title>
+    <programlisting role="php">
+<![CDATA[
+<?php
+$str = 'ab'; // Using one-byte characters
+echo strlen($str); // 2
+
+$str = 'äå'; // Using two-byte characters
+echo strlen($str); // 4
+
+$str = '恶妇'; // Using three-byte characters
+echo strlen($str); // 6
+
+$str = 'aä猫'; // Using various byte length characters
+echo strlen($str); // 6 = 1+2+3
+?>
+]]>
+    </programlisting>
+   </example>
   </para>
  </refsect1>