爲什麼我不能重定向到Facebook的getLoginUrl（）？

Question

<?php 
$fb = new Facebook(array(
    'appId' => $fb_config['app_id'], 
    'secret' => $fb_config['secret'], 
)); 

$params = array(
    'scope' => 'email, read_stream, user_interests, user_likes, user_location, user_status', 
    'redirect_uri' => 'http://myurl/facebook_connect', 
); 

$fb_login_url = $fb->getLoginUrl($params); 

$this->redirect($fb_login_url); 

$user = $fb->getUser(); 

print_r($user); // returns 0 
?> 

在上面的示例中，如果我重定向到getLoginUrl結果，getUser()方法返回零。

這是發生這種情況的原因嗎？

Answer 1

更換Facebook PHP SDK路徑，appId，secret和redirect_uri與您的應用程序設置，並嘗試：

require_once dirname(__FILE__) . '/facebook/facebook.php'; // You need Facebook PHP SDK 
$facebook = new Facebook(array(
    'appId' => $fb_config['app_id'], // Your Facebook app id 
    'secret' => $fb_config['secret'], // Your Facebook app secret 
    'cookie' => true 
)); 

$fb_user_id = $facebook->getUser(); 
if ($fb_user_id) { 
    try { 
     $fb_user_profile = $facebook->api($fb_user_id); 
     var_dump($fb_user_profile); 
    } catch (FacebookApiException $e) { 
     error_log($e); 
    } 
} else { 
    $params = array(
     'scope' => 'email, read_stream, user_interests, user_likes, user_location, user_status', 
     'redirect_uri' => 'http://myurl/facebook_connect', // Replace with your app url 
    ); 
    $facebook_login_url = $facebook->getLoginUrl($params); 
    echo '<script>top.location="' . $facebook_login_url . '";</script>'; 
    exit(); 
}