how to write update query in laravel code example

Example 1: laravel db::query update

DB::table('user')->where('email', $userEmail)->update(array('member_type' => $plan));

Example 2: update query laravel

$update = \DB::table('student') ->where('id', $data['id']) ->limit(1) ->update( [ 'name' => $data['name'], 'address' => $data['address'], 'email' => $data['email'], 'contactno' => $data['contactno'] ]);