Why not use Propel as DB-Framework? It is very powerful and easy to use.
/* initialize Propel, etc. */
$author = new Author();
$c = new Criteria();
$c->add(AuthorPeer::LAST_NAME, "Marx", Criteria::NOT_EQUAL);
$authors = AuthorPeer::doSelect($c);
// $authors contains array of Author objects
In version 1.3 they are switching from Creole to PDO which is much more faster. I use Propel 1.2 in my Prado3 project and it was easy to implement.