我正试图使用codeigniter&FB PHP SDK。
但它一直用facebook链接给我相同的登录信息，如果用户登录了，它就不会捕捉到，我是不是错过了会话之类的东西？
既然我们已经在做了，我怎么能得到延长的会议&用户脱机时，我应该保存哪些数据以发布到页面？
这是我的控制器：
function __construct () {
parent::__construct();
$this->load->helper('url_helper');
$this->load->add_package_path(APPPATH.'third_party/facebook/');
$this->config->load('facebook', TRUE);
$this->load->library('facebook', array( 'appId' => $this->config->item('appId', 'facebook'), 'secret' => $this->config->item('secret', 'facebook') ) );
}
public function index() {
$data['LoginURL'] = $this->facebook->getLoginUrl( array('scope' => 'manage_pages') );
$data['user'] = $this->facebook->getUser();
if ($data['user']) {
try {
$data['user_profile'] = $this->facebook->api('/me');
$data['AccessToken'] = $this->facebook->getAccessToken();
} catch (FacebookApiException $e) {
// The access token we have is not valid
$data['user'] = null;
}
}
$this->load->view('fb_welcome', $data);
}
以下是观点：
<!DOCTYPE html>
<html xmlns:fb="http://www.facebook.com/2008/fbml">
<body>
<?php if ( $user ): ?>
User <em><?php echo $user ?></em> is Logged in, AccessToken is <?php echo $AccessToken; ?>
<?php print_r($user_profile); ?>
<?php else: ?>
<?php echo anchor($LoginURL, "Login with facebook"); ?>
<?php endif; ?>
</body>
</html>
我不知道代码点火器，但希望这应该是一个很好的起点，只需在include中链接到你的fb-sdk，用你自己的vars替换vars，当用户没有登录时，它应该会给用户一个弹出窗口：
// include the FB SDK
require_once(APPLICATION_PATH . '/../library/facebook/facebook.php');
// create the application instance
$facebook = new Facebook(array(
'appId' => $this->facebookConfig->appid,
'secret' => $this->facebookConfig->appsecret
));
// get the user id
$user = $facebook->getUser();
if(!empty($user)) {
// We have a user ID, so probably a logged in user.
// If not, we'll get an exception, which we handle below.
try {
// do something
} catch(FacebookApiException $e) {
// If the user is logged out, you can have a
// user ID even though the access token is invalid.
// In this case, we'll get an exception, so we'll
// just ask the user to login again here.
$params = array(
'scope' => $this->permissions,
'redirect_uri' => $this->facebookConfig->applink
);
$loginUrl = $facebook->getLoginUrl($params);
// log errors
error_log($e->getType());
error_log($e->getMessage());
// redirect if not logged in or not enough permissions
//echo "<script>top.location='"".$loginUrl."'";</script>";die;
}
// Give the user a logout link
//echo '<br /><a href="' . $facebook->getLogoutUrl() . '">logout</a>';
} else {
$params = array(
'scope' => $this->permissions,
'redirect_uri' => $this->facebookConfig->applink
);
$loginUrl = $facebook->getLoginUrl($params);
// log errors
error_log($e->getType());
error_log($e->getMessage());
// redirect if not logged in or not enough permissions
echo "<script>top.location='"".$loginUrl."'";</script>";die;
}