<?= GridView::widget([
        'dataProvider' => $dataProvider,'columns' => [
            ['class' => 'yii\grid\SerialColumn'],['label' => 'Training score','attribute' => 'scoreTraining','format' => ['decimal',2],],['label' => 'Exam score','attribute' => 'scoreExam',]);

通常,标题名称将是“培训分数”和“考试分数”

是否可以在yii2 gridview中自定义标题行？所以我的标题行看起来像2行..

<table border=1>
  <tr><th>Training <br> score</th><th>Exam <br> score</th></tr>
</table>