php - getUser returning 0 facebook sdk -

i trying make login facebook on codeigniter app. have login button takes them grant permissions , redirects them page should display facebook information in array, getuser keeps returning 0, after log in.

i have no clue start looking errors first dive facebook sdk

here code:

php

facebook connect library:

<?php include(apppath.'libraries/facebook/facebook.php'); class fbconnect extends facebook{     public $user = null;     public $user_id = null;     public $fb = false;     public $fbsession = false;     public $appkey = 0;      public function __construct() {         $ci =& get_instance();         $ci->config->load('facebook', true);         $config = $ci->config->item('facebook');         parent::__construct($config);         $this->user_id = $this->getuser();         $me = null;         if ($this->user_id) {             try{                 $me = $this->api('/me');                 $this->user = $me;              } catch(facebookapiexception $e) {                 error_log($e);             }         } else {         }      }  }   ?> 

my main function

<?php if ( ! defined('basepath')) exit('no direct script access allowed');  class main extends ci_controller {     public function index()     {         $this->login();     }     public function login() {         $this->load->library('fbconnect');          $this->load->view('login');     }      public function facebook_request() {          $this->load->library('fbconnect');         $data = array(             'redirect_uri' => 'http://localhost/ci_test/main/handle_facebook_login',             'scope' => 'email'         );         redirect($this->fbconnect->getloginurl($data));     }      public function handle_facebook_login() {         $this->load->library('fbconnect');         if ($this->fbconnect->user) {             print_r($this->fbconnect->user);         } else         {             echo "couldn't log in";             echo "user id";             echo $this->fbconnect->user_id;         }     } } 

link login

<h1>login!</h1>     <a href='main/facebook_request'> connect facebook </a>