Exemplos de implementações de formulários com Zend Framework 1.

_loginForm.phtml

<?php
// view script utilizado no exemplo anterior
// application/modules/admin/views/forms/_loginForm.phtml
?>
<form action="<?= $this->element->getAction() ?>" method="<?= $this->element->getMethod() ?>" role="form">
    <div class="form-group">
        <?= $this->element->email ?>
        
        <!--<label for="exampleInputEmail1">Email address</label>-->
        <!--<input type="email" class="form-control" id="exampleInputEmail1" placeholder="Enter email">-->
    </div>
    <div class="form-group">
        <?= $this->element->senha ?>
        <!--<label for="exampleInputPassword1">Password</label>C-->
        <!--<input type="password" class="form-control" id="exampleInputPassword1" placeholder="Password">-->
    </div>
    <?php
    echo $this->element->submit . PHP_EOL;
    echo $this->element->reset . PHP_EOL;
    ?>
</form>

Application_Form_Login.php

<?php
/* Formulário utilizando definição de decorators */
class Admin_Form_Login extends Zend_Form {

    public function init() {
        //action e method
        $this->setMethod('post');
        $this->setElementDecorators(array(
            array('ViewHelper', array('class' => 'form-control')),
            array('Errors'),
            array('Description'),
            array('Label'),
            array('HtmlTag', array('tag' => 'div', 'class' => 'form-group')),
        ));
        
        //nome do formulário
        $this->setName('Login');
        //elemento para o campo username
        $username = new Zend_Form_Element_Text('email');
        //configurar o label, dizer q é obrigatório, adicionar um filtro e um validador
        $username->setLabel('E-mail')
                ->setRequired(true)
                ->addFilter('StripTags')
                ->addValidator('NotEmpty')
                ->setAttrib('class', 'form-control')
                ->addValidator('EmailAddress');
        
        //elemento para a senha
        $password = new Zend_Form_Element_Password('senha');
        $password->setLabel('Senha')
                ->setRequired(true)
                ->addFilter('StripTags')
                ->setAttrib('class', 'form-control')
                ->addValidator('NotEmpty');
        
        //botão de submit
        $submit = new Zend_Form_Element_Submit('submit');
        $submit->setLabel('Entrar');
        $submit->setAttrib('id', 'Entrar')
                ->setIgnore(true);
        
        $reset = new Zend_Form_Element_Submit('limpar');
        $reset->setLabel('Limpar');
        $reset->setAttrib('id', 'Limpar')
                ->setIgnore(true);
        
        //exemplo de class css
        $submit->setAttrib('class', 'btn btn-primary');
        $submit->removeDecorator('Label');
        
        $reset->setAttrib('class', 'btn btn-default');
        $reset->removeDecorator('Label');
        
        //adicionar os campos ao formulário
        $this->addElements(array($username, $password, $submit));
    }

}

Application_Form_Login_v2.php

<?php
/* Formulário utilizando definição de decorators com uma view script */
class Admin_Form_Login extends Zend_Form {

    public function init() {
        //action e method
        
        $this->setDecorators(array(
            array('ViewScript', array(
                    // the view template script
                    'viewScript' => 'forms/_loginForm.phtml',
                    // the module that contains our view templates
                    'viewModule' => 'admin'
                ))
        ));
        
        //nome do formulário
        $this->setName('Login');
        //elemento para o campo username
        $username = new Zend_Form_Element_Text('email');
        //configurar o label, dizer q é obrigatório, adicionar um filtro e um validador
        $username->setLabel('E-mail')
                ->setRequired(true)
                ->addFilter('StripTags')
                ->addValidator('NotEmpty')
                ->setAttrib('class', 'form-control')
                ->addValidator('EmailAddress');
        
        //elemento para a senha
        $password = new Zend_Form_Element_Password('senha');
        $password->setLabel('Senha')
                ->setRequired(true)
                ->addFilter('StripTags')
                ->setAttrib('class', 'form-control')
                ->addValidator('NotEmpty');
        
        //botão de submit
        $submit = new Zend_Form_Element_Submit('submit');
        $submit->setLabel('Entrar');
        $submit->setAttrib('id', 'Entrar')
                ->setIgnore(true);
        
        $reset = new Zend_Form_Element_Reset('reset');
        $reset->setLabel('Limpar');
        $reset->setAttrib('id', 'Limpar')
                ->setIgnore(true);
        
        //exemplo de class css
        $submit->setAttrib('class', 'btn btn-primary');
        $submit->removeDecorator('Label');
        
        $reset->setAttrib('class', 'btn btn-default');
        $reset->removeDecorator('Label');
        
        //adicionar os campos ao formulário
        $this->addElements(array($username, $password, $submit, $reset));
        
        
    }

}