diff --git a/reference/pdo/pdo/intransaction.xml b/reference/pdo/pdo/intransaction.xml
new file mode 100644
index 0000000000..7069bb1445
--- /dev/null
+++ b/reference/pdo/pdo/intransaction.xml
@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- $Revision$ -->
+<refentry xml:id="pdo.intransaction" xmlns="http://docbook.org/ns/docbook">
+ <refnamediv>
+  <refname>PDO::inTransaction</refname>
+  <refpurpose>
+   Checks if inside a transaction
+  </refpurpose>
+ </refnamediv>
+
+ <refsect1 role="description">
+  &reftitle.description;
+  <methodsynopsis>
+   <type>array</type><methodname>PDO::inTransaction</methodname>
+   <void/>
+  </methodsynopsis>
+  <para>
+   Checks if a transaction currently is active within the driver.
+  </para>
+ </refsect1>
+
+ <refsect1 role="parameters">
+  &reftitle.parameters;
+  &no.function.parameters;
+ </refsect1>
+
+ <refsect1 role="returnvalues">
+  &reftitle.returnvalues;
+  <para>
+   Returns &true; if a transaction currently is active, and false if not.
+  </para>
+ </refsect1>
+
+ <refsect1 role="notes">
+  &reftitle.returnvalues;
+  <note>
+   <para>
+    Note that currently only the PostGreSQL driver implements this method.
+   </para>
+  </note>
+ </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:"~/.phpdoc/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
+-->
diff --git a/reference/pdo/versions.xml b/reference/pdo/versions.xml
index b3f8d26725..4ca2f2133f 100644
--- a/reference/pdo/versions.xml
+++ b/reference/pdo/versions.xml
@@ -17,6 +17,7 @@
  <function name='pdo::exec' from='PHP 5 &gt;= 5.1.0, PECL pdo &gt;= 0.1.0'/>
  <function name='pdo::getattribute' from='PHP 5 &gt;= 5.1.0, PECL pdo &gt;= 0.2.0'/>
  <function name='pdo::getavailabledrivers' from='PHP 5 &gt;= 5.1.3, PECL pdo &gt;= 1.0.3'/>
+ <function name='pdo::intransaction' from='PHP 5 &gt;= 5.3.3, Bundled pdo_pgsql'/>
  <function name='pdo::lastinsertid' from='PHP 5 &gt;= 5.1.0, PECL pdo &gt;= 0.1.0'/>
  <function name='pdo::pgsqllobcreate' from='PHP 5 &gt;= 5.1.2, PECL pdo_pgsql &gt;= 1.0.2'/>
  <function name='pdo::pgsqllobopen' from='PHP 5 &gt;= 5.1.2, PECL pdo_pgsql &gt;= 1.0.2'/>