为什么$this->facebook->getUser()；返回0？

Question

我什么都试过了。我将我的域更改为非localhost。

<?php if (!defined('BASEPATH')) exit('No direct script access allowed');

class MY_Controller Extends CI_Controller
{
    var $data;
    var $master;

    function __construct()
    {
        parent::__construct();

        $this->data = array();
        $this->master = "layout/master";

        parse_str( $_SERVER['QUERY_STRING'], $_REQUEST );
        $CI = & get_instance();
        $CI->config->load("facebook",TRUE);
        $config = $CI->config->item('facebook');
        $this->load->library('Facebook', $config);

        $user = $this->facebook->getUser();

        if ($user == 0)
            $this->data['login_url'] = $this->facebook->getLoginUrl(array("scope" => "user_about_me"));
        else{
            $user = $this->facebook->api('/me');
            $this->data['logout_url'] = $this->facebook->getLogoutUrl();
        }
        print_r($user);
        print_r($this->facebook->getAccessToken());
    }
}

为什么获取AccessToken成功，但$user仍然返回0？我在stackoverflow和google上找遍了。

facebook成功将我重定向回我的网站，如果我不清楚..

Answer 1

调整你的代码

function __construct()
{
    parent::__construct();

    $this->data = array();
    $this->master = "layout/master";

    parse_str( $_SERVER['QUERY_STRING'], $_REQUEST );
    $CI = & get_instance();
    $CI->config->load("facebook",TRUE);
    $config = $CI->config->item('facebook');
    $this->load->library('Facebook', $config);
}

function facebook_login()
{    

    $user = $this->facebook->getUser();

    if($user == 0){

        $loginUrl = $this->facebook->getLoginUrl(array("scope"=>"user_about_me"));
        redirect("$loginUrl","location");

    } else {

        $user_info = $this->facebook->api('/me');
        print_r($user_info);

    }
}

Answer 2

我花了几个小时尝试了许多修复，注意到我的域名在facebook中被设置为http://domain.co.uk，而getLoginUrl则指向http://www.domain.co.uk。