Facebook Connect with codeignitor

Code:

Fatal error: Uncaught exception 'FacebookRestClientException' with message 'Session key invalid or no longer valid' in public_html/samplesite/system/application/libraries/facebook-client/facebookapi_php5_restlib.php:1915 Stack trace: #0 public_html/samplesite/system/application/libraries/facebook-client/facebookapi_php5_restlib.php(786): FacebookRestClient->call_method('facebook.users....', Array) #1 public_html/samplesite/system/application/libraries/facebook_connect.php(57): FacebookRestClient->users_getInfo('750791302', Array) #2 public_html/samplesite/system/application/libraries/facebook_connect.php(42): Facebook_connect->_manage_session() #3 public_html/samplesite/system/libraries/Loader.php(928): Facebook_connect->Facebook_connect() #4 public_html/samplesite/system/libraries/Loader.php(829): CI_Loader->_ci_init_class('facebook_connec...', '', NULL, NULL) #5 public_html/samplesite/system/libraries/L in public_html/samplesite/system/application/libraries/facebook-client/facebookapi_php5_restlib.php on line 1915

Code:

&lt;?php

/**

 * CodeIgniter Facebook Connect Library (http://www.haughin.com/code/facebook/)

 * 

 * Author: Elliot Haughin (http://www.haughin.com), [email protected]

 * 

 * VERSION: 1.0 (2009-05-18)

 * LICENSE: GNU GENERAL PUBLIC LICENSE - Version 2, June 1991

 * 

 **/





    include(APPPATH.'libraries/facebook-client/facebook.php');



    class Facebook_connect {



        private $_obj;

        private $_api_key        = NULL;

        private $_secret_key    = NULL;

        public     $user             = NULL;

        public     $user_id         = FALSE;

        public     $info            = NULL;

        

        public $fb;

        public $client;



        function Facebook_connect()

        {

            $this->_obj =& get_instance();



            $this->_obj->load->config('facebook');

            $this->_obj->load->library('session');

            

            $this->_api_key        = $this->_obj->config->item('facebook_api_key');

            $this->_secret_key    = $this->_obj->config->item('facebook_secret_key');



            $this->fb = new Facebook($this->_api_key, $this->_secret_key);

            

            $this->client = $this->fb->api_client;

                        

            if($this->fb->get_loggedin_user()) {

                try {

                    //Get some sample data from facebook, you can do whatever you want here really..

                    $this->user_id = $this->client->fql_query('SELECT uid, pic_square, first_name FROM user WHERE uid = ' . $this->fb->get_loggedin_user());

                } catch (Exception $ex) {

                    //Need to destroy the session. This is the important part!

                    $this->fb->clear_cookie_state();

                }

                $this->user_id = $this->fb->get_loggedin_user();                

            } else {

                $this->user_id = NULL;

            }

            



            $this->_manage_session();



            if ( $this->user_id !== NULL )

            {

                

            }

        }



        private function _manage_session()

        {

            if($this->_obj->session->userdata('facebook_user')){

                $user = $this->_obj->session->userdata('facebook_user');

            }else{

                $user=FALSE;

                }



            if ( $user === FALSE && $this->user_id !== NULL )

            {

                $profile_data = array('uid','first_name', 'last_name', 'name', 'locale', 'pic_square', 'profile_url');

                $info = $this->fb->api_client->users_getInfo($this->user_id, $profile_data);

                if (isset($info[0])) {

                        $user = $info[0];

                        $this->_obj->session->set_userdata('facebook_user', $user);

                    } 

            }

            elseif ( $user !== FALSE && $this->user_id === NULL )

            {

                // Need to destroy session

            }



            if ( $user !== FALSE )

            {

                $this->user = $user;

            }

        }

    }