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public function con_view(){
//$this->load->library('pagination');
//每页显示的条数
$page_size = 5;
$num = $this->db->query("select count(*) from exchange");
$total = $num->num_rows;
$config['base_url'] = site_url("Index/con_view");
//总条数
$config['total_rows'] = $total;
//echo $config['total_rows'];exit;
//var_dump($config['total_rows']);exit;
$config['per_page'] = $page_size;
$offset = intval($this->uri->segment(3));
$this->pagination->initialize($config);
$row["links"] = $this->pagination->create_links();
//var_dump($row["links"]);
$res=$this->db->select("*")
->limit($page_size,$offset)
->get("exchange");
$row["con"]=$res->result();
$this->load->view('con_view',$row);
}
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