diff --git a/reference/strings/functions/strcspn.xml b/reference/strings/functions/strcspn.xml
index 55663b7b88..d4d5a6ab4a 100644
--- a/reference/strings/functions/strcspn.xml
+++ b/reference/strings/functions/strcspn.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.2 $ -->
+<!-- $Revision: 1.3 $ -->
 <!-- splitted from ./en/functions/strings.xml, last change in rev 1.2 -->
   <refentry id="function.strcspn">
    <refnamediv>
@@ -14,12 +14,20 @@
       <type>int</type><methodname>strcspn</methodname>
       <methodparam><type>string</type><parameter>str1</parameter></methodparam>
       <methodparam><type>string</type><parameter>str2</parameter></methodparam>
+      <methodparam choice="opt"><type>int</type><parameter>start</parameter></methodparam>
+      <methodparam choice="opt"><type>int</type><parameter>length</parameter></methodparam>
      </methodsynopsis>
     <simpara>
      Returns the length of the initial segment of
      <parameter>str1</parameter> which does <emphasis>not</emphasis>
      contain any of the characters in <parameter>str2</parameter>.
     </simpara>
+    <simpara>
+     As of PHP 4.0B1 this function is binary safe.
+     Additionally it accepts two optional integer
+     parameters that can be used to define the starting position
+     and the length of the string to examine.
+    </simpara>
     <simpara>
      See also <function>strspn</function>.
     </simpara>
diff --git a/reference/strings/functions/strspn.xml b/reference/strings/functions/strspn.xml
index 6385e27ed2..9f61fe4003 100644
--- a/reference/strings/functions/strspn.xml
+++ b/reference/strings/functions/strspn.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.3 $ -->
+<!-- $Revision: 1.4 $ -->
 <!-- splitted from ./en/functions/strings.xml, last change in rev 1.2 -->
   <refentry id="function.strspn">
    <refnamediv>
@@ -14,6 +14,8 @@
       <type>int</type><methodname>strspn</methodname>
       <methodparam><type>string</type><parameter>str1</parameter></methodparam>
       <methodparam><type>string</type><parameter>str2</parameter></methodparam>
+      <methodparam choice="opt"><type>int</type><parameter>start</parameter></methodparam>
+      <methodparam choice="opt"><type>int</type><parameter>length</parameter></methodparam>
      </methodsynopsis>
     <simpara>
      Returns the length of the initial segment of
@@ -34,6 +36,21 @@ $var = strspn("42 is the answer, what is the question ...", "1234567890");
      will assign 2 to <varname>$var</varname>, because the string "42" will
      be the longest segment containing characters from "1234567890".
     </para>
+    <para>
+     As of PHP 4.0B1 this function is binary safe.
+     Additionally it accepts two optional integer
+     parameters that can be used to define the starting position
+     and the length of the string to examine.
+     <informalexample>
+      <programlisting role="php">
+<![CDATA[
+<?php
+echo strspn("foo", "o", 1, 2); // 2
+?>
+]]>
+      </programlisting>
+     </informalexample>
+    </para>
     <simpara>
      See also <function>strcspn</function>.
     </simpara>