westdc-zf1/application/models/LoginForm.php

<?php

class LoginForm extends Zend_Form
{
    public function __construct($options = null)
    {
        parent::__construct($options);
        $this->setName('login');

        $username = new Zend_Form_Element_Text('username');
        $username->setLabel('用户名')
        ->setRequired(true)
        ->addFilter('StripTags')
        ->addFilter('StringTrim')
        ->addValidator('NotEmpty');

		$password=new Zend_Form_Element_Password('password');
		$password->setLabel('密码')->setRequired(true);
			
		$remember=new Zend_Form_Element_Checkbox('remember');
		$remember->setLabel('记住我');
        
		$id = new Zend_Form_Element_Hidden('id');
        
        $submit = new Zend_Form_Element_Submit('submit');
        $submit->setLabel('登录');
        $submit->setAttrib('id', 'submitbutton');

        $this->addElements(array($id, $username, $password, $remember));
        $this->clearDecorators();
        $this->addDecorator('FormElements')
         ->addDecorator('HtmlTag', array('tag' => '<ul>','class'=>'loginform'))
         ->addDecorator('Form');
        
		/*
        $this->setElementDecorators(array(
            array('ViewHelper'),
            array('Errors'),
            array('Description'),
            array('Label', array('separator'=>' ')),
            array('HtmlTag', array('tag' => 'li', 'class'=>'element-group')),
        ));
		*/
		
		$captcha = $this->addElement('captcha', 'captcha', array(
            'captcha' =>  array(  
                // First the type...  
                'captcha' => 'Image',
                // Length of the word...  
                'wordLen' => 4,
                'fontsize'=>16,
                'width' => 100,
                'height' => 38,
                'dotNoiseLevel'=>2,
		'lineNoiseLevel'=>1,
                // Captcha timeout, 5 mins  
                'timeout' => 300,  
                // What font to use...  
                'font' => '../data/fonts/ggbi.ttf',  
                // Where to put the image  
                'imgDir' => 'vdimg/',  
                // URL to the images  
                // This was bogus, here's how it should be... Sorry again :S  
                'imgUrl' => '/vdimg',
            ),
            'label' => '验证码'
        ));
		
		/*

        // buttons do not need labels
        $submit->setDecorators(array(
            array('ViewHelper'),
            array('Description'),
            array('HtmlTag', array('tag' => 'li', 'class'=>'submit-group')),
        ));
		*/
		
		$this->addElements(array($submit));
        
    }
}