以逗号分隔格式显示Yii2 GridView列数据

use yii\grid\GridView;

echo GridView::widget([
    'dataProvider' => $dataProvider,
    'columns' => [
        'column1',
        'column2',
        'column3',
        // ...
    ],
]);

use yii\grid\GridView;

echo GridView::widget([
    'dataProvider' => $dataProvider,
    'columns' => [
        [
            'attribute' => 'column1',
            'value' => function ($model) {
                return number_format($model->column1);
            },
        ],
        'column2',
        'column3',
        // ...
    ],
]);