my code =>
<div class="form">
<?php $form=$this->beginWidget('CActiveForm', array(
'id'=>'user-form',
'enableAjaxValidation'=>false,
'htmlOptions'=>array('enctype'=>'multipart/form-data'),
)); ?>
<p class="note">Fields with <span class="required">*</span> are required.</p>
<?php echo $form->errorSummary($model); ?>
<div class="row">
<?php echo $form->labelEx($model,'username'); ?>
<?php echo $form->textField($model,'username',array('size'=>20,'maxlength'=>20)); ?>
<?php echo $form->error($model,'username'); ?>
</div>
<div class="row">
<?php echo $form->labelEx($model,'password'); ?>
<?php echo $form->passwordField($model,'password',array('size'=>50,'maxlength'=>50)); ?>
<?php echo $form->error($model,'password'); ?>
</div>
<div class="row">
<?php echo $form->labelEx($model,'password2'); ?>
<?php echo $form->passwordField($model,'password2',array('size'=>50,'maxlength'=>50)); ?>
<?php echo $form->error($model,'password2'); ?>
</div>
<div class="row">
<?php echo $form->labelEx($model,'email'); ?>
<?php echo $form->textField($model,'email',array('size'=>50,'maxlength'=>50)); ?>
<?php echo $form->error($model,'email'); ?>
</div>
<div class="row">
<?php echo $form->labelEx($model,'avatar'); ?>
<?php echo $form->fileField($model,'avatar',array('size'=>50,'maxlength'=>50)); ?>
<?php echo $form->error($model,'avatar'); ?>
</div>
<?php if (extension_loaded('gd')): ?>
<div class="row">
<?php echo CHtml::activeLabelEx($model, 'verifyCode') ?>
<div>
<?php $this->widget('CCaptcha'); ?><br/>
<?php echo CHtml::activeTextField($model,'verifyCode'); ?>
</div>
<div class="hint">Ketik tulisan yang ada pada gambar .
<br/>Tulisan tidak case sensitive</div>
</div>
<?php endif; ?>
<div class="row buttons">
<?php echo CHtml::submitButton($model->isNewRecord ? 'Create' : 'Save'); ?>
</div>
<?php $this->endWidget(); ?>
</div><!-- form -->
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