CI - Pagination

<?php
class Order extends Controller {

    // search data
    function browse_search() {

        if(empty($_POST['field_content'])) {
            $field_content = 0;
        } else {
            $field_content = $_POST['field_content'];
        }


        if(empty($_POST['limit'])) {
            $limit = 10;
        } else {
            $limit = $_POST['limit'];
        }

        redirect('order/browse_result/'.$field_content."/".$limit);

    }

    // search result
    function browse_result($field_content = '', $limit = 10, $start = 0)    {

        if($field_content !== '0') {
            $object['data']['field_content'] = $field_content;
        } else {
            $object['data']['field_content'] = '';
        }

        $object['data']['limit'] = $limit;
        $object['data']['start'] = $start;

        $object['sort_link'] = 'order/browse_result/'.$field_content.'/'.$limit.'/';

        $this->load->library('pagination');

        $config['per_page'] = $limit;
        $config['num_links'] = 6;
        $config['first_link'] = "&lt;&lt;";
        $config['last_link'] = "&gt;&gt;";
        $config['prev_link'] = "&lt;";
        $config['next_link'] = "&gt;";

        $config['uri_segment'] = 4; // 3, 4, 5, atau 6, coba-coba aja
        $config['base_url'] = site_url('order/browse_result/'.$field_content.'/'.$limit.'/');

        $config['total_rows'] = $this->m_order->orders_count_by_criteria($field_content); // orders_count_by_criteria menghitung jumlah baris berdasarkan content

        // save pagination definition
        $this->pagination->initialize($config);

        $object['limit'] = $limit;
        $object['total_rows'] = $config['total_rows'];

        $this->template->write_view('content', 'order/order_browse', $object);
        $this->template->render();

    }
}