Help with functions / PDO statements

PHP
12

@DonP look.

Imagine the OP wants to get cities inside another function.

So he have to repeat his old approach but with your DAO as well.

function getHotels($state) {
    require('/path/to/dao.php');
    $dbObj = new dao();
    $cities = $dbObj->getCities('State');
    // use $cities to get hotels or whatever.
}

In fact you improved nothing in regard of the accessibility of the DB driver.

Not to mention that stuffing all your database -related methods in one single class sounds a bit awkward.