yiicod/yii2-auth

<?php

use yii\helpers\Html;
use yii\widgets\ActiveForm;

/* @var $this yii\web\View */
/* @var $form yii\widgets\ActiveForm */
/* @var $model \frontend\models\SignupForm */

$this->title = 'Signup';
$this->params['breadcrumbs'][] = $this->title;
?>
<div class="site-signup">
    <h1><?php echo Html::encode($this->title); ?></h1>

    <p>Please fill out the following fields to signup:</p>

    <div class="row">
        <div class="col-lg-5">
            <?php
            $form = ActiveForm::begin([
                        'id' => 'form-signup',
                        'validateOnChange' => false,
                        'validateOnBlur' => false,
            ]);
            ?>
            <?php echo $form->field($model, 'username'); ?>
            <?php echo $form->field($model, 'email'); ?>
                <?php echo $form->field($model, 'password')->passwordInput(); ?>
                <?php echo $form->field($model, 'confirm')->passwordInput(); ?>
            <div class="form-group">
            <?php echo Html::submitButton('Signup', ['class' => 'btn btn-primary', 'name' => 'signup-button']); ?>
            </div>
<?php ActiveForm::end(); ?>
        </div>
    </div>
</div>