Cannot access protected property CI_Pagination - php

Question

Cannot access protected property `CI_Pagination
Trying to add submit button on last page of pagination currently it's on every page by default...on line 49 i have condition to check whether i am in last page or not, I want a submit button at the end of the pagination page
Code on which error is showing..please explain how to implement
if($this->pagination->cur_page >= ceil($this->pagination->total_rows / $this->pagination->per_page))
{
$isLastPage = true;
}else{
$isLastPage = false;
}
Pagination code
public function quizdisplay()
{
//echo $this->pagination->create_links();
//$this->load->library('pagination');
$config = array();
$config['base_url'] = 'http://localhost/xampp/cii/index.php/Questions/quizdisplay';
//$config['total_rows'] = 10;
$total_row = $this->quizmodel->record_count();
$config["total_rows"] = $total_row;
$config['per_page'] = 1;
$config["uri_segment"] = 3;
$config['use_page_numbers'] = TRUE;
$config['num_links'] = $total_row;
$config['cur_tag_open'] = ' <a class="current">';
$config['cur_tag_close'] = '</a>';
$config['next_link'] = 'Next';
$config['prev_link'] = 'Previous';
$this->pagination->initialize($config);
if($this->uri->segment(3)){
$page = ($this->uri->segment(3)) ;
}else{
$page = 1;
}
$data["results"] = $this->quizmodel->getQuestions($config["per_page"], $page);
$this->pagination->create_links();
$data["links"] = $this->pagination->create_links();
View data according to array.
$this->load->view("play_quiz", $data);
}
Both the codes are in same function