Once again, you need to understand what Zend\Form\FieldsetHTML doesn't match <fieldset>! A is Zend\Form\Fieldsetsimply a collection of Zend\Form\Element, which is usually a single entity, and you can provide multiple entities with data from the same Form.
, , , , Zend\Form\View\Helper -Classes. form() view-helper, Zend\Form\Element formRow() Zend\Form\Fieldset formCollection(). !
. - :
<?=$this->form()->openTag($form);?>
<fieldset>
<div class="wrapper">
<?=$this->formRow($form->get('f1')->get('el1'));?>
<?=$this->formRow($form->get('f1')->get('el2'));?>
<?=$this->formRow($form->get('f1')->get('el3'));?>
</div>
</fieldset>
<?=$this->form()->closeTag();?>
, formRow(). , :
<label>
<span><?=$this->formLabel($form->get('f1')->get('el1'));?></span>
<?=$this->formInput($form->get('f1')->get('el1'));=>
<?=$this->formElementErrors($form->get('f1')->get('el1'));?>
</label>
formInput() , , formText(), formSelect(), formTextarea() .. ..