$criteria = new Criteria(); $criteria->add('id', 1, Criteria::EQUAL);
$criteria = new Criteria(); $criteria->add( $criteria->getNewCriterion('name', 'John', Criteria::EQUAL) ->addOr($criteria->getNewCriterion('name', 'Peter', Criteria::EQUAL)) );
$criteria = new Criteria(); $criteria->addJoin(BookPeer::AUTHOR_ID, AuthorPeer::ID);The Criteria API is part of the Propel ORM library for PHP.