<div class="mdl-selectfield"> <label>Marca</label> <select class="browser-default" name="productBrand" id="editBrand"> <option value="" disabled selected>Marca</option> <?php require_once '../model/classMarca.php'; $objMarca = new Marca(); $objMarca->listMarca(); foreach ((array) $objMarca as $key) { foreach ($key as $key2 => $value) { echo '<option value="' . $value['mar_id'] . '">' . $value['mar_nombre'] . '</option>'; } } ?> </select> </div>