$form->field($model, 'field')->label('')->dropdownList(['1' => 'Текст'], [ 'prompt' => 'Выбор..',
'options' => [
1 => ['data-html-text'=>'Текст'],
]])selected="selected" data-skip="1"'options' =><option value="">Промпт</option>value => 0 // для prompt : <option value="0">Промпт</option>value => 7 // для prompt<option value="7">Промпт</option>valueprompt