最后一次修复it.here是我的意见

at last i fix it.here is my view

    <?php for($i = 1; $i <=10; $i++):?>
        <tr>
            <td>
                <?php echo $i;?>
            </td>

            <td>
            <input type="text" name="code[]" value="<?php echo '';?>" id="code" />
            </td>

            <td>
                <input type="text" name="rate[]" value="<?php echo '';?>" id="rate" />
            </td>
            <td>
                <input type="text" name="quantity[]" value="<?php echo '';?>" id="quantity" />
            </td>

        </tr>
        <?php endfor;?>

这里是我的控制器

    if (empty($_POST)) 

    {

        $this->index();
    } 

else 
    {
        //insert to database
        $this->load->model('buy_product_model');
        $data= $this->buy_product_model->add_product();
        //echo "success";
        $this->index();
    }

模型//

   $data  = array();
        $todayDate = date('Y-m-d');
        for($i = 0; $i < count($_POST['code']); $i++)
            {
                if($_POST['code'][$i] != '')
                    {
                        $data[] = array(
                            'code' => $_POST['code'][$i],
                            'shop' => $_POST['shop'],
                            'rate' => $_POST['rate'][$i],
                            'quantity' => $_POST['quantity'][$i],
                            'total' =>( $_POST['rate'][$i]*$_POST['quantity'][$i]),
                            'date' => $todayDate
                            );
                    }
            }
                $dataCount = count($data);

                if($dataCount)
                {
                $this->db->insert_batch('purchase', $data);
                }

                return $dataCount;