Storing Array is not allowed inside mysql DB
so You can convert it to json and do that
$status->language = json_encode($request->language);
or
$status->language = implode(',', $request->language);
You can insert commaimplode(",",$request['language'])
Here is how you need to do it in your controller
$status= new PostTable();$language[] = $request->language$status->language = json_encode($language);