Yii2如何使用GridView合并一列中的两行或多行

public function actionIndex()
{
    $dataProvider = new ActiveDataProvider([
        'query' => YourModel::find(),
    ]);

    return $this->render('index', [
        'dataProvider' => $dataProvider,
    ]);
}

use yii\grid\GridView;

echo GridView::widget([
    'dataProvider' => $dataProvider,
    'columns' => [
        'column1',
        [
            'attribute' => 'column2',
            'mergeColumns' => ['column2'], // 指定需要合并的列
            'value' => function ($model, $key, $index, $column) {
                // 自定义合并后的值
                return $model->column2;
            },
        ],
        'column3',
        // 其他列...
    ],
]);