diff --git a/reference/misc/functions/php-strip-whitespace.xml b/reference/misc/functions/php-strip-whitespace.xml
index 5d44e1d293..19b276ab08 100644
--- a/reference/misc/functions/php-strip-whitespace.xml
+++ b/reference/misc/functions/php-strip-whitespace.xml
@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='iso-8859-1'?>
-<!-- $Revision: 1.3 $ -->
+<!-- $Revision: 1.4 $ -->
 <refentry id="function.php-strip-whitespace">
  <refnamediv>
   <refname>php_strip_whitespace</refname>
@@ -17,6 +17,8 @@
    Returns the PHP source code in <parameter>filename</parameter> with
    PHP comments and whitespace removed. This may be useful for determining the
    amount of actual code in your scripts compared with the amount of comments.
+   This is similar to using <command>php -w</command> from the
+   <link linkend="features.commandline">commandline</link>.
   </para>
   <note>
    <para>