<?php
    class Application_Form_Guestbook extends Zend_Form
    {
        public function init()
        {
            // Set the method for the display form to POST
            $this->setMethod('post');

            // Add an email element
            $this->addElement('text', 'email', array(
                'label'      => 'Your email address:',
                'required'   => true,
                'filters'    => array('StringTrim'),
                'validators' => array(
                    'EmailAddress',
                )
            ));

            // Add the comment element
            $this->addElement('textarea', 'comment', array(
                'label'      => 'Please Comment:',
                'required'   => true,
                'validators' => array(
                    array('validator' => 'StringLength', 'options' => array(0, 20))
                    )
            ));

            // Add a captcha
            $this->addElement('captcha', 'captcha', array(
                'label'      => 'Please enter the 5 letters displayed below:',
                'required'   => true,
                'captcha'    => array(
                    'captcha' => 'Figlet',
                    'wordLen' => 5,
                    'timeout' => 300
                )
            ));

            // Add the submit button
            $this->addElement('submit', 'submit', array(
                'ignore'   => true,
                'label'    => 'Sign Guestbook',
            ));

            // And finally add some CSRF protection
            $this->addElement('hash', 'csrf', array(
                'ignore' => true,
            ));
        }
    }
?>