diff --git a/reference/strings/functions/implode.xml b/reference/strings/functions/implode.xml
index 050f442fd5..d5d89eda40 100644
--- a/reference/strings/functions/implode.xml
+++ b/reference/strings/functions/implode.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.implode">
    <refnamediv>
@@ -10,7 +10,9 @@
     <title>Description</title>
      <methodsynopsis>
       <type>string</type><methodname>implode</methodname>
-      <methodparam><type>string</type><parameter>glue</parameter></methodparam>
+      <methodparam choice="opt">
+       <type>string</type><parameter>glue</parameter>
+      </methodparam>
       <methodparam><type>array</type><parameter>pieces</parameter></methodparam>
      </methodsynopsis>
     <para>
@@ -41,6 +43,12 @@ print $comma_separated; // lastname,email,phone
       to use the documented order of arguments.
      </para>
     </note>
+    <note>
+     <para>
+      As of PHP 4.3.0, the glue parameter of <function>implode</function> is
+      optional and defaults to the empty string('').
+     </para>
+    </note>
     <simpara>
      See also <function>explode</function>, and <function>split</function>.
     </simpara>