当我点击我的注销网址时,我的facebook php sdk getLogoutUrl无效。 它会把我带回我给定的重定向网址,但它不会破坏我的facebook会话,我仍然可以在我的页面上看到我的var_dump($ fb_data)数组并注销网址。
这是我使用codeigniter的代码 我的lib_login库函数facebook代码
public function facebook()
{
$facebook_default_scope = explode(',', $this->ci->config->item("facebook_default_scope"));
$facebook_app_id = $this->ci->config->item("facebook_app_id");
$facebook_api_secret = $this->ci->config->item("facebook_api_secret");
// init app with app id and secret
FacebookSession::setDefaultApplication($facebook_app_id, $facebook_api_secret);
// login helper with redirect_uri
$helper = new FacebookRedirectLoginHelper(site_url('login/facebook'));
// see if a existing session exists
if (isset($_SESSION) && isset($_SESSION['fb_token'])) {
// create new session from saved access_token
$session = new FacebookSession($_SESSION['fb_token']);
// validate the access_token to make sure it's still valid
try {
if (!$session->validate()) {
$session = null;
}
} catch (Exception $e) {
// catch any exceptions
$session = null;
}
}
if (!isset($session) || $session === null) {
// no session exists
try {
$session = $helper->getSessionFromRedirect();
} catch(FacebookRequestException $ex) {
// When Facebook returns an error
// handle this better in production code
print_r($ex);
} catch(Exception $ex) {
// When validation fails or other local issues
// handle this better in production code
print_r($ex);
}
}
// see if we have a session
if (isset($session)) {
// save the session
$_SESSION['fb_token'] = $session->getToken();
// create a session using saved token or the new one we generated at login
$session = new FacebookSession($session->getToken());
// graph api request for user data
$request = new FacebookRequest($session, 'GET', '/me?fields=id,name,accounts{access_token,category,name,id,perms},permissions');
$response = $request->execute();
// get response
$graphObject = $response->getGraphObject()->asArray();
$logoutUrl = site_url('login');
$fb_data = array(
'me' => $graphObject,
'loginUrl' => $helper->getLoginUrl($facebook_default_scope),
'logoutUrl' => $helper->getLogoutUrl($session,$logoutUrl),
);
$this->ci->session->set_userdata('fb_data', $fb_data);
} else {
$fb_data = array(
'me' => null,
'loginUrl' => $helper->getLoginUrl($facebook_default_scope),
'logoutUrl' => $helper->getLogoutUrl($session,$logoutUrl),
);
$this->ci->session->set_userdata('fb_data', $fb_data);
}
return $fb_data;
}
这是我的控制器功能
public function facebook()
{
$fb_data = $this->lib_login->facebook();
if (isset($fb_data['me'])) {
echo "<pre>";
var_dump($fb_data);
echo "</pre>";
echo '<a href="' . $fb_data['logoutUrl'] . '">logout</a>';
} else {
echo '<a href="' . $fb_data['loginUrl'] . '">Login</a>';
}
}
当我使用此代码登录我的帐户时,我的页面上会显示注销网址和$ fb_data数组,但是当我注销并刷新我的网页时,它仍然是他们的。可以告诉我在这里做错了什么。< / p>
答案 0 :(得分:1)
尝试这样的事情:
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Login extends CI_Controller
{
public function __construct()
{
parent::__construct();
$this->load->library(array('session', 'lib_login'));
$this->fb_data = $this->lib_login->facebook();
}
/**
* facebook login
*
* @return void
* @author appleboy
**/
public function facebook()
{
// check login data
if (isset($this->fb_data['me'])) {
var_dump($this->fb_data);
} else {
echo '<a href="' . $this->fb_data['loginUrl'] . '">Login</a>';
}
}
public function logout()
{
if ( isset($this->fb_data['me']) ) {
$this->session->unset_userdata('fb_data');
}
redirect('login/facebook', 'refresh');
}
}
/* End of file login.php */
/* Location: ./application/controllers/login.php */