Remove Empty Tags In Imperavi Redactor

Using Imperavi Redactor with Yii 2 framework. When no text is entered, Imperavi Redactor produces this markup:

. For each line break this markup is app

Solution 1:

Found this solution:

useyii\helpers\HtmlPurifier;

$text = HtmlPurifier::process($model->text, [
    'HTML.ForbiddenElements' => ['p', 'br', ' '],
]);