update where command in codeigniter code example

Example: codeigniter update

$data = [
        'title' => $title,
        'name'  => $name,
        'date'  => $date
];

$builder->where('id', $id);
$builder->update($data);
// Produces:
//
//      UPDATE mytable
//      SET title = '{$title}', name = '{$name}', date = '{$date}'
//      WHERE id = $id