diff --git a/reference/filter/reference.xml b/reference/filter/reference.xml
index 57da861b17..a3380e8767 100644
--- a/reference/filter/reference.xml
+++ b/reference/filter/reference.xml
@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.3 $ -->
+<!-- $Revision: 1.4 $ -->
 <!-- Purpose: basic.vartype -->
 <!-- Membership: pecl -->
+<!-- State: experimental -->
 <!-- Generated by xml_proto.php v2.4. Found in /scripts directory of phpdoc. -->
 <reference id="ref.filter">
  <title>Filter Functions</title>
@@ -200,7 +201,11 @@
         <entry><constant>FILTER_SANITIZE_NUMBER_FLOAT</constant></entry>
         <entry>"number_float"</entry>
         <entry></entry>
-        <entry></entry>
+        <entry>
+         <constant>FILTER_FLAG_ALLOW_FRACTION</constant>,
+         <constant>FILTER_FLAG_ALLOW_THOUSAND</constant>,
+         <constant>FILTER_FLAG_ALLOW_SCIENTIFIC</constant>
+        </entry>
         <entry>
          Remove all characters except digits, <literal>+-</literal> and
          optionally <literal>.,eE</literal>.