insert batch option in codeigniter

Question

I can use insert batch in codeigniter but my problem is if I have 7 field in my form and i fill up 5 field in the form and submit I get 7 row in db. 5 row is ok but others 2row show sl no, date and invoice no. I want only 5 data which is fill up by form not others. my model is

public function purchase(){  
  $data = array(
    array(
     'date'=> $this->input->post('date'),
     'vendor_name'=>$this->input->post('vendor_name'),
     'model'=>$this->input->post('model'),
     'price' =>$this->input->post('price'), 
     'purchase_quantity'=>$this->input->post('quantity'),
     'amount'  =>$this->input->post('price')*$this->input->post('quantity'),
     'invoice_no'=>$this->input->post('invoice')
     ),
      array(
     'date'=> $this->input->post('date'),
     'vendor_name'=>$this->input->post('vendor_name2'),
     'model'=>$this->input->post('model2'),
     'price' =>$this->input->post('price2'), 
     'purchase_quantity'=>$this->input->post('quantity2'),
     'amount'  =>$this->input->post('price2')*$this->input->post('quantity2'),
     'invoice_no'=>$this->input->post('invoice')
     ),

      array(
     'date'=> $this->input->post('date'),
     'vendor_name'=>$this->input->post('vendor_name3'),
     'model'=>$this->input->post('model3'),
     'price' =>$this->input->post('price3'), 
     'purchase_quantity'=>$this->input->post('quantity3'),
    'amount'  =>$this->input->post('price3')*$this->input->post('quantity3'),
     'invoice_no'=>$this->input->post('invoice')
     )
     );
    $insert = $this->db->insert_batch('purchase',$data);
   return $insert; 
  }

Please help

Answer 1

you can use simple insert query on foreach

foreach ($data as $row){
$insert = $this->db->insert('purchase',$row);