Batchinsert Records With Timestamp Value

hi want to insert timestamp value into my database but i dont want to do that with timestamp behaviour,coz i have no idea how to do that with timestamp behaviour

here is my code

my user model

public function createuser(){

     $connection = \Yii::$app->db;

    $connection->createCommand()->batchInsert('user', ['name', 'class','creation','modified'], [

['Avi', 'Application of arts','',''],




i have problem with creation field,now i m inserting blank value,i want to insert that also but how i do ,i need to do with batchinsert command,in my model timestamp behaviour i have but that called beforeinsert when model save

i want save timestamp value in user table using createcommand()->batchinsert

help me plz