diff --git a/appendices/migration52.xml b/appendices/migration52.xml
index de2c7013d4..833ff6e87e 100644
--- a/appendices/migration52.xml
+++ b/appendices/migration52.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.13 $ -->
+<!-- $Revision: 1.14 $ -->
 <appendix id="migration52">
  <title>Migrating from PHP 5.1.x to PHP 5.2.x</title>
 
@@ -953,7 +953,7 @@ $obj->getCommentName('');
   <itemizedlist>
    <listitem>
     <simpara>
-     bool posix_initgroups(string name, int base_group_id)
+     <function>posix-initgroups</function>
      - Calculate the group access list for the user specified in name
     </simpara>
    </listitem>
diff --git a/reference/posix/functions/posix-initgroups.xml b/reference/posix/functions/posix-initgroups.xml
new file mode 100644
index 0000000000..63c4d411d5
--- /dev/null
+++ b/reference/posix/functions/posix-initgroups.xml
@@ -0,0 +1,83 @@
+<?xml version="1.0" encoding="iso-8859-1"?>
+<!-- $Revision: 1.1 $ -->
+<refentry id="function.posix-initgroups">
+ <refnamediv>
+  <refname>posix_initgroups</refname>
+  <refpurpose>Calculate the group access list</refpurpose>
+ </refnamediv>
+ 
+ <refsect1 role="description">
+  &reftitle.description;
+  <methodsynopsis>
+   <type>bool</type><methodname>posix_initgroups</methodname>
+   <methodparam><type>string</type><parameter>name</parameter></methodparam>
+   <methodparam><type>int</type><parameter>base_group_id</parameter></methodparam>
+  </methodsynopsis>
+  <para>
+   Calculates the group access list for the user specified in name.
+  </para>
+ </refsect1>
+
+ <refsect1 role="parameters">
+  &reftitle.parameters;
+  <para>
+   <variablelist>
+    <varlistentry>
+     <term><parameter>firstparameter</parameter></term>
+     <listitem>
+      <para>
+       The user to calculate the list for.
+      </para>
+     </listitem>
+    </varlistentry>
+    <varlistentry>
+     <term><parameter>base_group_id</parameter></term>
+     <listitem>
+      <para>
+       Typically the group number from the password file.
+      </para>
+     </listitem>
+    </varlistentry>
+   </variablelist>
+  </para>
+ </refsect1>
+
+ <refsect1 role="returnvalues">
+  &reftitle.returnvalues;
+  <para>
+   &return.success;
+  </para>
+ </refsect1>
+
+ <refsect1 role="seealso">
+  &reftitle.seealso;
+  <para>
+   <simplelist>
+    <member>The Unix manual page for initgroups(3).</member>
+   </simplelist>
+  </para>
+ </refsect1>
+
+</refentry>
+
+<!-- Keep this comment at the end of the file
+Local variables:
+mode: sgml
+sgml-omittag:t
+sgml-shorttag:t
+sgml-minimize-attributes:nil
+sgml-always-quote-attributes:t
+sgml-indent-step:1
+sgml-indent-data:t
+indent-tabs-mode:nil
+sgml-parent-document:nil
+sgml-default-dtd-file:"../../../../manual.ced"
+sgml-exposed-tags:nil
+sgml-local-catalogs:nil
+sgml-local-ecat-files:nil
+End:
+vim600: syn=xml fen fdm=syntax fdl=2 si
+vim: et tw=78 syn=sgml
+vi: ts=1 sw=1
+-->
+