function ajax()
{
include "../../_config.php";
$dt = new Datatables(new MySQL($config), $this);
$dt->query("Select film_id, title, description, rating, length from film");
$dt->edit('description', "\$1", 'sample_callback(film_id), strtolower(title)');
echo $dt->generate();
}
<?php
require '../../../vendor/autoload.php';
use Ozdemir\Datatables\Datatables;
use Ozdemir\Datatables\DB\MySQL;
include "../../_config.php";
$dt = new Datatables(new MySQL($config));
$dt->query("Select film.film_id as fid, title, description, rental_rate from film left join film_category on film_category.film_id = film.film_id");
echo $dt->generate();
