use_page_number show wrong data in page - codeigniter

Question

I'm really need your help about pagination.
Already tried to search and not found the answer.
So my problem is my pagination page not show a correct data when I used use_page_number into true.
When I set it to false, my pagination show correct data but the link url not show current page.
With use_page_number is TRUE
Example 1 : per_page is 2;
Page 1 : 1,2
Page 2 : 3,4
Page 3 : 4,5 -> repeated data
Example 2 : per_page is 1
Page 1 : 1
Page 2 : 3 -> this should 2
Page 3 : blank -> this should 3
Example 3 : per_page is 5
Page 1 : 1,2,3,4,5
Page 2 : 3,4,5,6,7
Page 3 : 4,5,6,7,8
With use_page_numbers is false
Page 'blank' : 1,2
Page 2 : 3,4
Page 4 : 5
I know that CI pagination not show current page we are, but need
use_page_numbers (correct me if I'm wrong), but not work in my code :(
I really dont know what's wrong, could you please guys help me to solve it?
This is my code :
$config['base_url'] = base_url()."admin/user/index/";
$config['total_rows'] = $this->db->count_all('msuser');
$config['per_page'] = 3;
$config['num_links'] = 2;
$config['first_link'] = 'First';
$config['last_link'] = 'Last';
$config['uri_segment'] = 4;
$config['full_tag_open'] = "<ul class='pagination'>";
$config['full_tag_close'] ="</ul>";
$config['num_tag_open'] = '<li>';
$config['num_tag_close'] = '</li>';
$config['cur_tag_open'] = "<li class='disabled'><li class='active'><a href='#'>";
$config['cur_tag_close'] = "<span class='sr-only'></span></a></li>";
$config['next_link'] = '»';
$config['next_tag_open'] = "<li>";
$config['next_tagl_close'] = "</li>";
$config['prev_link'] = '«';
$config['prev_tag_open'] = "<li>";
$config['prev_tagl_close'] = "</li>";
$config['first_tag_open'] = "<li>";
$config['first_tagl_close'] = "</li>";
$config['last_tag_open'] = "<li>";
$config['last_tagl_close'] = "</li>";
$config['use_page_numbers'] = TRUE;
$this->pagination->initialize($config);
$data['user'] = $this->user_model->getUserByPage($config['per_page'], $this->uri->segment(4));
$data['main'] = 'admin/user_view';
$this->load->view('admin/dashboard',$data);
really appreciate for your help guys.
thanks

Answer 1

You can try change a few your code:
$page_num = $this->uri->segment(4);
($page_num>1)? $start = ($page_num - 1) * $config['per_page'] : $start = $page_num;
$data['user'] = $this->user_model->getUserByPage($config['per_page'], $start);