My Controller

post.php

<?php
class Post extends CI_Controller {

	function __construct()

		{
		
		parent::__construct();
		$this->load->helper('form');
		$this->load->helper('url');
		$this->load->helper('html');
		$this->load->model('retindpost','dis');	
		$this->load->library('session');
		

		}

	private $id;


	public function index()

		{
		
		$this->load->view('postit');		
		//$s=$this->session->userdata('ip_address');
		//echo "your ip is:".$s;			
		}

	public function ret_post()

		{

		$this->$id = $this->uri->segment(3);
		$dpost['dp']=$this->dis->ret_ind_post($id);
		$comments['return']=$this->dis->get_comments();
		$data1=$dpost + $comments;
		$this->load->view('indpostview',$data1);
				
		}

	public function post_comment()

		{

		$cmt=$this->input->post('cmt');
		$this->load->model('commentprocess');
		$now['show']=$this->commentprocess->insert_comment($cmt,$this->$id);
		$this->load->view('commentland');

		}

	public function boo() 

		{
		
		$this->load->database();
		$ret="SELECT * FROM posts ORDER BY 1 DESC LIMIT 1";
		$query=$this->db->query($ret);
		$doo['fed']=$query->result();
		$this->load->view('landing1',$doo);
		
		}

	public function foo()

		{

		$this->load->database();
		$mpost=$_POST['post'];
		$sql="INSERT INTO posts VALUES ('',".$this->db->escape($mpost).")";
		$this->db->query($sql);
		$this->load->view('landing');
		
		}	

	public function view()

		{
		
		$this->load->model('returnposts','post');
		$data['posts']=$this->post->get_all_posts();
		$this->load->view('viewit',$data);		
		
	    }   

	}
?>