带有查询字符串的Codeigniter分页问题

我有一个在codeigniter中制作的分页脚本，下面是我的脚本

/*---product_pagination----*/
        $total_row = $this->autoload_model->get_data_from_table("td_model,td_country","*",
                                                                "td_country.country_id = td_model.model_country
                                                                 AND td_model.model_id > 0
                                                                 ORDER BY td_model.model_username")->num_rows();

        echo $total_row;
        $this->load->library('pagination');
        //$start_row= $this->uri->segment(3);
        $segment_3 = $this->uri->segment(3);
        if($segment_3 == '')
        {
            $start_row = 0;
        }
        else
            $start_row = $_REQUEST['start_row'];
        if(isset($_REQUEST['per_page']))
            $perpage = $_REQUEST['per_page'];
        else
            $perpage = 2;
        if(trim($start_row) == '')
        {
         $start_row =0;
        }
        $config['base_url'] = base_url().'model/show_model/?start_row='.$start_row;
        $config['total_rows'] = $total_row;
        $config['per_page'] = $perpage;
        $config['uri_segment'] = 3;
        $config['page_query_string'] = TRUE;
        $config['full_tag_open'] = "<div class='pagination'>";
        $config['full_tag_close'] = '</div>';
        $config['cur_tag_open'] = "<span style='width: 80px; '>";
        $config['cur_tag_close'] = '</span>';
        $config['first_link'] = '<< First';
        $config['first_tag_open'] = "<span style='width: 80px; '>";
        $config['first_tag_close'] = '</span>';
        $config['last_link'] = 'Last >>';
        $config['last_tag_open'] = "<span style='width: 80px; '>";
        $config['last_tag_close'] = "</span>";
        $config['next_link'] = 'Next >';
        $config['next_tag_open'] = "<span style='width: 80px; '>";
        $config['next_tag_close'] = '</span>';
        $config['prev_link'] = '< Prev';
        $config['prev_tag_open'] = "<span style='width: 80px; '>";
        $config['prev_tag_close'] = '</span>';
        $this->pagination->initialize($config);
        $data['pagination'] = $this->pagination->create_links();
        $data['all_model']=$this->autoload_model->get_data_from_table("td_model,td_country","*",
                                                                "td_country.country_id = td_model.model_country
                                                                 AND td_model.model_id > 0
                                                                 ORDER BY td_model.model_username")->result_array();
        $data['model_list']=$this->autoload_model->get_data_from_table("td_model,td_country","*",
                                                                "td_country.country_id = td_model.model_country
                                                                 AND td_model.model_id > 0
                                                                 ORDER BY td_model.model_username
                                                                 LIMIT $start_row, $perpage")->result_array();

        /*$this->product_model->products_fragment_by_category($cat_slug,$start_row,$perpage);*/

        /*----pagination ends------*/

       $this->load->view('header',$data);
       $this->load->view('header_lower');
       $this->load->view('model_list');
       $this->load->view('left_bar');
       $this->load->view('footer');
    }

为什么每页会扩展到2 4 6

似乎起始行值与每页值相同

注意，“每页”是传递的默认查询字符串，但是可以使用

$config['query\u string\u segment']='offset'//将每页参数名称更改为偏移量

• 查询参数中的每页为偏移量
• 配置中的每页为限制

http://localhost/ecam/model/show_model/?start_row=0&per_page=2

http://localhost/ecam/model/show_model/?start_row=0&per_page=4