Codeigniter pagination is not working - php

Question

I am using codeigniter pagination. But I'm facing a problem while using codeingiter pagination. Here is the issue which I am facing.
Ex: If there are more than 10 records for a page and here I am displaying 5 records per page. If I click on the second page it is displaying the data correctly but if I need to go back for the first page it is not working. Here is my code:
Controller:
class Testimonial extends CI_Controller {
function __construct() {
parent::__construct();
//here we will autoload the pagination library
$this->load->model('testimonial_model');
$this->load->library('pagination');
}
public function index()
{
$config = array();
$config["base_url"] = base_url('testimonial/index');
$config['total_rows'] = $this->testimonial_model->record_count();//here we will count all the data from the table
$config['per_page'] = 2;//number of data to be shown on single page
$config["uri_segment"] = 2;
$this->pagination->initialize($config);
$page = ($this->uri->segment(3)) ? $this->uri->segment(3) : 0;
$data["records2"] = $this->testimonial_model->get_all_testimonials($config["per_page"], $page);
$data["links"] = $this->pagination->create_links();//create the link for pagination
$data['mainpage'] = "testimonial";
$this->load->view('templates/template',$data);
}
}
Model:
class Testimonial_model extends CI_Model
{
function get_all_testimonials($limit, $start)
{
$this->db->limit($limit, $start);
$this->db->select('T.*');
$this->db->from('testimonials AS T');
$this->db->where(array('T.status'=>1));
$q = $this->db->get();
if($q->num_rows()>0)
{
return $q->result();
}
else
{
return false;
}
}
function record_count()
{
return $this->db->count_all("testimonials");
}
}

Answer 1

use this answer please read the code once to understand it
public function index()
{
$config = array();
//$config["base_url"] = base_url('testimonial/index');
$get_vars = $this->input->get();
if(is_array($get_vars))
$config['suffix'] = '?'.http_build_query($get_vars,'', "&");
//$config['prefix'] = '?'.http_build_query($get_vars,'', "&");
$config['base_url'] = base_url().$this->router->class.'/index';
$config['first_url'] = $config['base_url'] . (isset($config['suffix'])?$config['suffix']:'');
$config['total_rows'] = $this->testimonial_model->record_count();//here we will count all the data from the table
$config['per_page'] = 2;//number of data to be shown on single page
//this line should be according to url to fetch actual value
$config["uri_segment"] = ($this->uri->segment('2')?$this->uri->segment('2'):0); // 2 or 3 based on ur url
$this->pagination->initialize($config);
$page = $config["uri_segment"];
$data["records2"] = $this->testimonial_model->get_all_testimonials($config["per_page"], $page);
$data["links"] = $this->pagination->create_links();//create the link for pagination
$data['mainpage'] = "testimonial";
$this->load->view('templates/template',$data);
}