public function init() { parent::init(); $this->setName('newPhoneNumberForm')->setAction('/register/contact/change-phone-number')->setDecorators(array('FormElements', array('HtmlTag', array('tag' => 'div', 'class' => 'Area')), 'Form'))->setMethod('post'); $id = new Zend_Form_Element_Hidden('id'); $id->addValidator('Int')->addFilter('StringTrim'); $this->addElement($id); }