如何在Yii2中动态控制gridview控件的列数？

use yii\grid\GridView;

<?= GridView::widget([
    'dataProvider' => $dataProvider,
    'columns' => [
        // 列的配置
    ],
]) ?>

use yii\grid\GridView;
use yii\grid\SerialColumn;
use yii\grid\DataColumn;

<?= GridView::widget([
    'dataProvider' => $dataProvider,
    'columns' => [
        // 固定的列
        ['class' => SerialColumn::class],

        // 动态的列
        <?php foreach ($dynamicColumns as $column): ?>
            <?= $column ?>
        <?php endforeach; ?>

        // 其他列
        [
            'class' => DataColumn::class,
            'attribute' => 'attribute_name',
            // 更多属性和配置
        ],
    ],
]) ?>

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

    // 根据条件动态设置列
    if ($condition) {
        $dynamicColumns[] = [
            'class' => DataColumn::class,
            'attribute' => 'dynamic_attribute',
            // 更多属性和配置
        ];
    }

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