如何在没有库YII2的情况下添加动态字段

class YourModel extends \yii\db\ActiveRecord
{
    public $dynamicFields = [];
    
    // ...
}

public function actionCreate()
{
    $model = new YourModel();
    
    if ($model->load(Yii::$app->request->post())) {
        $model->dynamicFields = Yii::$app->request->post('dynamicFields');
        
        if ($model->save()) {
            // 保存成功
        } else {
            // 保存失败
        }
    }
    
    // ...
}

foreach ($model->dynamicFields as $fieldName => $fieldValue) {
    echo $fieldName . ': ' . $fieldValue;
}