Connect with facebook using PHP SDK in codeigniter - php

Question

Im implementing facebook's PHP SDK for authentication here. I've searched over net and found lots of tutorial on that. like Using Facebook PHP SDK 3 with CodeIgniter
i've modified base_facebook.php to return www.skillpaper.com/auth/fb_register in
$this->facebook->getLoginUrl()
when i click "Connect with Facebook" in login modal and facebook auth popup appears its successfully redirect to my given url. i.e www.skillpaper.com/auth/fb_register
and my code is like in auth controller:
public function fb_register(){
$userId = $this->facebook->getUser();
if($userId != 0){
// Get user's data and print it
$user = $this->facebook->api('/me');
var_dump($user);
}else{ echo "No user";}
}
i'm getting "No user" every time!
What am i missing? I don't want to use any JS API for this. any suggestion?
Thanks in advance.

Answer 1

Please Download the Facebook PHP SDK From https://developers.facebook.com/docs/reference/php/
Now Put src folder into application/controller folder.
Call into controller any function like this :-
require 'src/facebook.php';
$appId = FBAPPID;
$secretkey = FBSECRETKEY;
$facebook = new Facebook(array(
'appId' => $appId,
'secret' => $secretkey,
));
$fb['facebook']=$facebook;
$facebook_user = $facebook->getUser();
$fb['facebook_user']=$facebook_user;
if ($facebook_user) {
try {
$user_profile = $facebook->api('/me');
//$fb['logoutUrl'] = $facebook->getLogoutUrl();
} catch (FacebookApiException $e) {
error_log($e);
$facebook_user = null;
$this->load->view('Your Page');
}
}else {
$data['loginUrl'] = $facebook->getLoginUrl(array(
'scope' => 'user_about_me,email,user_birthday,friends_birthday,publish_stream,manage_pages,offline_access'
));
$this->load->view('Your Page');
}