yii2-app-basic/views/site/contact.php

<?php
use yii\helpers\Html;
use yii\widgets\ActiveForm;
use yii\captcha\Captcha;

/**
 * @var yii\base\View $this
 * @var yii\widgets\ActiveForm $form
 * @var app\models\ContactForm $model
 */
$this->title = 'Contact';
$this->params['breadcrumbs'][] = $this->title;
?>
<h1><?php echo Html::encode($this->title); ?></h1>

<?php if (Yii::$app->session->hasFlash('contactFormSubmitted')): ?>
<div class="alert alert-success">
	Thank you for contacting us. We will respond to you as soon as possible.
</div>
<?php return; endif; ?>

<p>
	If you have business inquiries or other questions, please fill out the following form to contact us. Thank you.
</p>

<div class="row">
	<div class="col-lg-5">
		<?php $form = ActiveForm::begin(array('id' => 'contact-form')); ?>
			<?php echo $form->field($model, 'name')->textInput(); ?>
			<?php echo $form->field($model, 'email')->textInput(); ?>
			<?php echo $form->field($model, 'subject')->textInput(); ?>
			<?php echo $form->field($model, 'body')->textArea(array('rows' => 6)); ?>
			<?php echo $form->field($model, 'verifyCode')->widget(Captcha::className(), array(
				'options' => array('class' => 'form-control'),
				'template' => '<div class="row"><div class="col-lg-3">{image}</div><div class="col-lg-6">{input}</div></div>',
			)); ?>
			<div class="form-actions">
				<?php echo Html::submitButton('Submit', array('class' => 'btn btn-primary')); ?>
			</div>
		<?php ActiveForm::end(); ?>
	</div>
</div>