How to check if an ActiveRecord instance conforms to a specific interface?

Question

Yii

For example, there is such an ActiveRecord

class User extends  \yii\db\ActiveRecord {

    public function rules(){
        return[
            [
                 'first_name',
                 'last_name',
                  'login'
            ],
            'string'
      ];
   }
}

its instance is passed to a specific method. How to determine in this method that the data passed is really a User instance and it has first_name, last_name, login properties? because interfaces in PHP can only contain methods, but properties cannot, so instanceof will not help here either. How to be?

Answer 1

Make a method that checks these properties

Answer 2

if ($instance instanceof \path\to\User::className()) {
    echo 'Yeah';
}