No databases or collections have to do be explicitly created: selectDB( 'demo' ); $collection = $database->selectCollection( 'testCollection' ); // or $collection = $m->selectCollection( 'demo', 'testCollection' ); ?>]]> Different connection strings: %new MongoClient("mongodb://localhost");% %new MongoClient("mongodb://localhost:29000");% %new MongoClient("mongodb://mongo.example.com");%