php - CodeIgniter insert two rows instead one -

i have issue codeigniter. reason insert 2 rows in database instead one.

below code model:

/** * add new fuel */ public function addnewfuel($id = null, $data) {     if ($id) {         var_dump('test');         $data = array(            'price' => '333' ,            'fuel' => 'dizelka' ,            'petrol_id' => '66'         );         echo '<pre>';         print_r($data);         echo '</pre>';          $this->db->insert('prices', $data);         echo $this->db->last_query();         $this->db->insert('prices_archive',$data);          return;     }  } 

and here output:

string(4) "test" array (     [price] => 333     [fuel] => dizelka     [petrol_id] => 66 ) 

edit:

this code controller calls model's function:

function addnewfuel() {     if ($this->session->userdata('logged_in')) {         $this->load->helper('form');         $id = $this->uri->segment(3);         $fuel = $this->input->post('fuel');         $price = $this->input->post('price');         $addnewfuel = array('fuel' => $fuel, 'price' => $price);         $data['addnewfuel'] = $this->adminarea_model->addnewfuel($id,$addnewfuel);         $data['getfuels'] = $this->adminarea_model->getfuels();         $data['getpetrolnamebyid'] = $this->adminarea_model->getpetrolnamebyid();         $data['getpetrolinformation'] = $this->adminarea_model->getpetrolinformation();         $this->load->view('admin/edit', $data);     } else {         //if no session, redirect login page         redirect('login', 'refresh');     } } 

for reasons in table 'prices' i'm getting 2 rows same data, , don't have idea why happens.

thanks

you inserting data both controller model.

remove model, hope ill solve problem. thanks

 $data = array(        'price' => '333' ,        'fuel' => 'dizelka' ,        'petrol_id' => '66'     );