Как из json_decode вывести значение массива в случайном порядке?

object(app\models\Questions)[148]
  private '_attributes' (yii\db\BaseActiveRecord) => 
    array (size=6)
      'id' => int 56
      'name' => string 'Вопрос второй' (length=25)
      'answear' => 
        array (size=4)
          1 => string 'да' (length=4)
          2 => string 'Мир' (length=6)
          3 => string 'откуда' (length=12)
          4 => string 'Эстетика' (length=16)
      'correct' => 
        array (size=1)
          'right' => string 'Мир' (length=6)
      'active' => int 1
      'id_theme' => int 82
  private '_oldAttributes' (yii\db\BaseActiveRecord) => 
    array (size=6)
      'id' => int 56
      'name' => string 'Вопрос второй' (length=25)
      'answear' => string '{"1":"да","2":"Мир","3":"откуда","4":"Эстетика"}' (length=67)
      'correct' => string '{"right": "Мир"}' (length=19)
      'active' => int 1
      'id_theme' => int 82

foreach ($model as $value){
    shuffle($value->answear);
}
var_dump($model[0]->answear);

$answear = $model[0]->answear;
shuffle($answear);