class Monitors extends CI_Controller {
public function warning(){
    $config= array();
    $config['per_page'] = 15; //每页显示的数据数
    $current_page = intval($this->input->get("per_page")); //获取当前分页页码数
   
 $status=$this->input->get("filter-status",TRUE);
 $level=$this->input->get('filter-level',TRUE);
 $timestamp=$this->input->get('filter-timestamp',TRUE);
    $all = $this->monitors_m->getAllData($current_page,$config['per_page'],$status,$timestamp,$level);
   //这里返回的有总条数和具体的数据，根据自己的情况略加修改即可
 $data['allevent'] = $all['content'];
 $config['total_rows']   = $all['count'];//总条数
    $config['num_links'] = 3;//页码连接数
 $config['use_page_numbers'] = TRUE; 
 $config['page_query_strings'] = TRUE;//关键配置
 $config['base_url'] = base_url().'index.php/monitors/warning?'&filter-status='.$status.'&filter-level='.$level.'&filter-timestamp='.$timestamp;//关键配置
 $this->load->library('pagination');//加载ci pagination类
 $this->pagination->initialize($config);
 $data['page'] = $this->pagination->create_links();//关键代码
 $this->load->view("monitors_v",$data);
}

$config[‘page_query_string']

$config[‘base_url']

$config['base_url'] = base_url().'index.php/monitors/warning;

$status=$this->input->get("filter-status",TRUE);
$level=$this->input->get('filter-level',TRUE);
$timestamp=$this->input->get('filter-timestamp',TRUE);
$config['base_url'] = base_url().'index.php/monitors/warning?'&filter-status='.$status.'&filter-level='.$level.'&filter-timestamp='.$timestamp;//关键配置

<?php echo $page?>

$config['first_link']   = "<<";//首页
$config['prev_link']   = "<";//上一页
$config['next_link']   = ">";//下一页
$config['last_link']   = ">>";//尾页
$config['full_tag_open'] = '<ul class="pagination pagination-split">'; 
$config['full_tag_close'] = '</ul>'; 
$config['first_tag_open'] = '<li>';//第一个链接的起始标签。
$config['first_tag_close'] = '</li>';//第一个链接的结束标签。
$config['next_tag_open'] = '<li>';//下一页链接的起始标签。
$config['next_tag_close'] = '</li>';//下一页链接的结束标签。
$config['prev_tag_open'] = '<li>';//上一页链接的起始标签。
$config['prev_tag_close'] = '</li>';//上一页链接的结束标签。
$config['cur_tag_open'] = '<li class="active"><a>';
$config['cur_tag_close'] = '</a></li>';//当前页链接的结束标签。
$config['num_tag_open'] = '<li>';//数字链接的起始标签。
$config['num_tag_close'] = '</li>';//数字链接的结束标签。