Description:
------------
http://www.php.net/manual/en/ref.pdo.php
Error in example



Reproduce code:
---------------
<?php
$db = new PDO('oci:', 'scott', 'tiger');
$stmt = $db->prepare("insert into images (id, contenttype, imagedata) " .
  "VALUES (?, ?, EMPTY_BLOB()) RETURNING imagedata INTO ?");
$id = get_new_id(); // some function to allocate a new ID

// assume that we are running as part of a file upload form
// You can find more information in the PHP documentation

$fp = fopen($_FILES['file']['tmp_name'], 'rb');

$stmt->bindParam(1, $id);
$stmt->bindParam(2, $_FILES['file']['type']);
$stmt->bindParam(3, $fp, PDO::PARAM_LOB);

$stmt->beginTransaction(); <--- must be $db->beginTransaction();
$stmt->execute();
$stmt->commit(); <--- must be $db->commit();
?> 

Expected result:
----------------
<?php
$db = new PDO('oci:', 'scott', 'tiger');
$stmt = $db->prepare("insert into images (id, contenttype, imagedata) " .
  "VALUES (?, ?, EMPTY_BLOB()) RETURNING imagedata INTO ?");
$id = get_new_id(); // some function to allocate a new ID

// assume that we are running as part of a file upload form
// You can find more information in the PHP documentation

$fp = fopen($_FILES['file']['tmp_name'], 'rb');

$stmt->bindParam(1, $id);
$stmt->bindParam(2, $_FILES['file']['type']);
$stmt->bindParam(3, $fp, PDO::PARAM_LOB);

$db->beginTransaction();
$stmt->execute();
$db->commit();
?>