diff --git a/functions/ibase.xml b/functions/ibase.xml
index 97739e91b0..b1a1b8a0c2 100644
--- a/functions/ibase.xml
+++ b/functions/ibase.xml
@@ -1,7 +1,18 @@
  <reference id="ref.ibase">
   <title>InterBase functions</title>
   <titleabbrev>InterBase</titleabbrev>
-
+   <refnamediv>
+    <refname>checkdate</refname>
+    <refpurpose>validate a date/time</refpurpose>
+   </refnamediv>
+   <refsect1>
+    <title>Description</title>
+    <funcsynopsis>
+     <funcdef>int <function>checkdate</function></funcdef>
+     <paramdef>int <parameter>month</parameter></paramdef>
+     <paramdef>int <parameter>day</parameter></paramdef>
+     <paramdef>int <parameter>year</parameter></paramdef>
+    </funcsynopsis>
   <partintro>
    <para>
    </para>
@@ -10,14 +21,25 @@
   <refentry id="function.ibase-connect">
    <refnamediv>
     <refname>ibase_connect</refname>
-    <refpurpose></refpurpose>
+    <refpurpose>Open a connection to an Interbase database</refpurpose>
    </refnamediv>
    <refsect1>
     <title>Description</title>
     <funcsynopsis>
-     <funcdef> <function>ibase_connect</function></funcdef>
-     <paramdef> <parameter></parameter></paramdef>
+     <funcdef>int <function>ibase_connect</function></funcdef>
+     <paramdef> <parameter>string database</parameter></paramdef>
+	 <paramdef> <optional> string username 
+				<optional> string password </optional>
+	 			</optional>
+	 </paramdef>
+     <parameter>
     </funcsynopsis>
+	<simpara>
+	Opens a connection to an Interbase database.
+	</simpara>
+	<para>
+	See also: <function>ibase_pconnect</function>.
+	</para>
    </refsect1>
   </refentry>
 
@@ -27,137 +49,182 @@
     <refpurpose></refpurpose>
    </refnamediv>
    <refsect1>
-    <title>Description</title>
     <funcsynopsis>
-     <funcdef> <function>ibase_pconnect</function></funcdef>
-     <paramdef> <parameter></parameter></paramdef>
+     <funcdef>int <function>ibase_connect</function></funcdef>
+     <paramdef> <parameter>string database</parameter></paramdef>
+	 <paramdef> <optional> string username 
+				<optional> string password </optional>
+	 			</optional>
+	 </paramdef>
+     <parameter>
     </funcsynopsis>
+	<simpara>
+	Opens a persistent connection to an Interbase database.
+	</simpara>
+	<para>
+	See also <function>ibase_connect</function>.
+	</para>
    </refsect1>
   </refentry>
 
   <refentry id="function.ibase-close">
    <refnamediv>
     <refname>ibase_close</refname>
-    <refpurpose></refpurpose>
+    <refpurpose>Close a connection to an Interbase database</refpurpose>
    </refnamediv>
    <refsect1>
     <title>Description</title>
     <funcsynopsis>
-     <funcdef> <function>ibase_close</function></funcdef>
-     <paramdef> <parameter></parameter></paramdef>
+     <funcdef>int <function>ibase_close</function></funcdef>
+     <paramdef> <parameter><optional>int connection_id</optional></parameter></paramdef>
     </funcsynopsis>
+	<para>
+	Close a connection to an Interbase database.  This function takes a connection id returned from ibase_connect.
+	</para>
    </refsect1>
   </refentry>
 
   <refentry id="function.ibase-query">
    <refnamediv>
     <refname>ibase_query</refname>
-    <refpurpose></refpurpose>
+    <refpurpose> Execute a query on an Interbase database</refpurpose>
    </refnamediv>
    <refsect1>
     <title>Description</title>
     <funcsynopsis>
-     <funcdef> <function>ibase_query</function></funcdef>
-     <paramdef> <parameter></parameter></paramdef>
+     <funcdef>int <function>ibase_query</function></funcdef>
+     <paramdef> <parameter><optional> int link_identifier</optional></parameter></paramdef>
+	 <paramdef> <parameter> string query </parameter> </paramdef>
     </funcsynopsis>
+	<simpara>
+		Performs a query on a Interbase database, returning a result identifier for use with <function>ibase_fetch_row</function>, 
+		<function>ibase_free_result</function> and <function>ibase_free_query</function>.
+	</simpara>
    </refsect1>
   </refentry>
 
   <refentry id="function.ibase-fetch-row">
    <refnamediv>
     <refname>ibase_fetch_row</refname>
-    <refpurpose></refpurpose>
+    <refpurpose> Fetch a row from an Interbase database</refpurpose>
    </refnamediv>
    <refsect1>
     <title>Description</title>
     <funcsynopsis>
-     <funcdef> <function>ibase_fetch_row</function></funcdef>
-     <paramdef> <parameter></parameter></paramdef>
+     <funcdef>int <function>ibase_fetch_row</function></funcdef>
+     <paramdef> <parameter>int result_identifier</parameter></paramdef>
     </funcsynopsis>
+	<simpara>
+		Returns the next row specified by the result identifier obtained using the <function>ibase_query</function>.
+	</simpara>
    </refsect1>
   </refentry>
 
   <refentry id="function.ibase-free-result">
    <refnamediv>
     <refname>ibase_free_result</refname>
-    <refpurpose></refpurpose>
+    <refpurpose> Free a result set</refpurpose>
    </refnamediv>
    <refsect1>
     <title>Description</title>
     <funcsynopsis>
-     <funcdef> <function>ibase_free_result</function></funcdef>
-     <paramdef> <parameter></parameter></paramdef>
+     <funcdef>int  <function>ibase_free_result</function></funcdef>
+     <paramdef> <parameter>int result_identifier</parameter></paramdef>
     </funcsynopsis>
+	<simpara>
+	Free's a result set the has been created by <function>ibase_query</function>.
    </refsect1>
   </refentry>
 
   <refentry id="function.ibase-prepare">
    <refnamediv>
     <refname>ibase_prepare</refname>
-    <refpurpose></refpurpose>
+    <refpurpose>Prepare a query for later binding of parameter placeholders and execution.</refpurpose>
    </refnamediv>
    <refsect1>
     <title>Description</title>
     <funcsynopsis>
-     <funcdef> <function>ibase_prepare</function></funcdef>
-     <paramdef> <parameter></parameter></paramdef>
+     <funcdef>int <function>ibase_prepare</function></funcdef>
+     <paramdef> <parameter><optional>int link_identifier</optional></parameter></paramdef>
+	 <paramdef> <parameter> string query</parameter></paramdef>
     </funcsynopsis>
+	<simpara>
+	Prepare a query for later binding of parameter placeholders (via <function>ibase_bind</function>) and execution 
+	(via <function>ibase_execute</function>). 
    </refsect1>
   </refentry>
 
   <refentry id="function.ibase-bind">
    <refnamediv>
     <refname>ibase_bind</refname>
-    <refpurpose></refpurpose>
+    <refpurpose>Bind placeholder parameters from a previously prepared query</refpurpose>
    </refnamediv>
    <refsect1>
     <title>Description</title>
     <funcsynopsis>
      <funcdef> <function>ibase_bind</function></funcdef>
-     <paramdef> <parameter></parameter></paramdef>
+     <paramdef> <parameter>int query</parameter></paramdef>
     </funcsynopsis>
+	<simpara>
+	Bind Parameters from a query prepared by <function>ibase_prepare</function>.
+	</simpara>
+    <note>
+     <para><function>ibase_bind</function> is currently not functional </para>
+    </note>
    </refsect1>
   </refentry>
 
   <refentry id="function.ibase-execute">
    <refnamediv>
     <refname>ibase_execute</refname>
-    <refpurpose></refpurpose>
+    <refpurpose> Execute a previously prepared query</refpurpose>
    </refnamediv>
    <refsect1>
     <title>Description</title>
     <funcsynopsis>
-     <funcdef> <function>ibase_execute</function></funcdef>
-     <paramdef> <parameter></parameter></paramdef>
+     <funcdef>int <function>ibase_execute</function></funcdef>
+     <paramdef> <parameter>int query</parameter></paramdef>
     </funcsynopsis>
+	<simpara>
+	Execute a query prepared (and perhaps binded) by <function>ibase_prepare</function> and <function>ibase_bind</function>.
+	</simpara>
    </refsect1>
   </refentry>
 
   <refentry id="function.ibase-free-query">
    <refnamediv>
     <refname>ibase_free_query</refname>
-    <refpurpose></refpurpose>
+    <refpurpose>Free memory allocated by a prepared query</refpurpose>
    </refnamediv>
    <refsect1>
     <title>Description</title>
     <funcsynopsis>
      <funcdef> <function>ibase_free_query</function></funcdef>
-     <paramdef> <parameter></parameter></paramdef>
+     <paramdef> <parameter>int query</parameter></paramdef>
     </funcsynopsis>
+	<simpara>
+	Free a query prepared by <function>ibase_prepare</function>.
+	</simpara>
    </refsect1>
   </refentry>
 
   <refentry id="function.ibase-timefmt">
    <refnamediv>
     <refname>ibase_timefmt</refname>
-    <refpurpose></refpurpose>
+    <refpurpose>Sets the format of datetime columns returned from queries. </refpurpose>
    </refnamediv>
    <refsect1>
     <title>Description</title>
     <funcsynopsis>
      <funcdef> <function>ibase_timefmt</function></funcdef>
-     <paramdef> <parameter></parameter></paramdef>
+     <paramdef> <parameter>string format</parameter></paramdef>
     </funcsynopsis>
+	<simpara>
+	Sets the format of the datetime columns returned from queries.
+	</simpara>
+	<note>
+    	<para><function>ibase_timefmt</function> is currently not functional </para>
+    </note>
    </refsect1>
   </refentry>