Description:
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Call to PDO LastInsertId() with the MySQL driver was working fine for me on 5.0.3 and 5.0.4 but is returning "%ld" with 5.1 b2. I am using just the php_pdo_mysql.dll extension that came with the 5.1 beta. 


Reproduce code:
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<?php

$dbh = new PDO("mysql:dbname=COMPANYDB;host=localhost",'root','*******');

$stmt = 'INSERT INTO company (name) VALUES ("Acme");';
$pdo_stmt = $dbh->prepare($stmt);
$rows_affected = $pdo_stmt->execute();
$last_insert_id = $dbh->lastInsertId();
echo $last_insert_id; // gets %ld

?>

Expected result:
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What I want to see is the primary key of the row I have just inserted. The database definition by the way is:

create table company (
   id integer auto_increment,
   name char(20),
   employee_of_the_month integer,
   primary key(id) ); 

Actual result:
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What I do see is %ld.