验证表单Yii2中的输入数组

<?php $form = ActiveForm::begin(); ?>

<div id="emails">
    <?php foreach ($model->emails as $index => $email): ?>
        <div class="email-item">
            <?= $form->field($model, "emails[$index]")->textInput(['placeholder' => 'Enter email'])->label(false) ?>
        </div>
    <?php endforeach; ?>
</div>

<button type="button" id="add-email">Add Email</button>
<button type="submit">Submit</button>

<?php ActiveForm::end(); ?>

public function actionSubmit()
{
    $model = new YourModel();
    if ($model->load(Yii::$app->request->post()) && $model->validate()) {
        // 处理验证通过的逻辑
    }

    return $this->render('submit', ['model' => $model]);
}

class YourModel extends Model
{
    public $emails = [];

    public function rules()
    {
        return [
            [['emails'], 'each', 'rule' => ['email']],
        ];
    }
}