diff --git a/reference/strings/functions/ucwords.xml b/reference/strings/functions/ucwords.xml
index 1813461b26..363c01d401 100644
--- a/reference/strings/functions/ucwords.xml
+++ b/reference/strings/functions/ucwords.xml
@@ -11,6 +11,9 @@
   <methodsynopsis>
    <type>string</type><methodname>ucwords</methodname>
    <methodparam><type>string</type><parameter>str</parameter></methodparam>
+   <methodparam choice="opt">
+    <type>string</type><parameter>delimiters</parameter><initializer>" \t\r\n\f\v"</initializer>
+   </methodparam>
   </methodsynopsis>
   <para>
    Returns a string with the first character of each word in
@@ -18,8 +21,8 @@
   </para>
   <para>
    The definition of a word is any string of characters that is immediately
-   after a whitespace (These are: space, form-feed, newline, carriage return,
-   horizontal tab, and vertical tab).
+   after any character listed in the <parameter>delimiters</parameter> parameter
+   (By default these are: space, form-feed, newline, carriage return, horizontal tab, and vertical tab).
   </para>
  </refsect1>
 
@@ -35,6 +38,14 @@
       </para>
      </listitem>
     </varlistentry>
+    <varlistentry>
+     <term><parameter>delimiters</parameter></term>
+     <listitem>
+      <para>
+       The optional <parameter>delimiters</parameter> contains the word separator characters.
+      </para>
+     </listitem>
+    </varlistentry>
    </variablelist>
   </para>
  </refsect1>
@@ -46,6 +57,30 @@
   </para>
  </refsect1>
 
+ <refsect1 role="changelog">
+  &reftitle.changelog;
+  <para>
+   <informaltable>
+    <tgroup cols="2">
+     <thead>
+      <row>
+       <entry>&Version;</entry>
+       <entry>&Description;</entry>
+      </row>
+     </thead>
+     <tbody>
+      <row>
+       <entry>5.4.32, 5.5.16</entry>
+       <entry>
+        Added the <parameter>delimiters</parameter> parameter.
+       </entry>
+      </row>
+     </tbody>
+    </tgroup>
+   </informaltable>
+  </para>
+ </refsect1>
+
  <refsect1 role="examples">
   &reftitle.examples;
   <para>
@@ -61,6 +96,22 @@ $bar = 'HELLO WORLD!';
 $bar = ucwords($bar);             // HELLO WORLD!
 $bar = ucwords(strtolower($bar)); // Hello World!
 ?>
+]]>
+    </programlisting>
+   </example>
+  </para>
+
+  <para>
+   <example>
+    <title><function>ucwords</function> example with custom delimiter</title>
+    <programlisting role="php">
+<![CDATA[
+<?php
+$foo = 'hello|world!';
+$bar = ucwords($foo);             // Hello|world!
+
+$baz = ucwords($foo, "|");        // Hello|World!
+?>
 ]]>
     </programlisting>
    </example>