不對勁，跟我的Facebook圖表URL

Question

當試圖從Facebook的圖形API訪問的信息，在這裏我明明做錯事是我的網頁代碼：

它獲取一切，我需要比其他用戶電子郵件地址，我知道你需要延長的權限，我已經要求在我的代碼如下所示。

require 'src/facebook.php'; 
$app_id = "211665122244023"; 


    $canvas_page = "http://apps.facebook.com/midcitymafia/"; 

    $auth_url = "https://www.facebook.com/dialog/oauth?client_id=" 
      . $app_id . "&redirect_uri=" . urlencode($canvas_page) . "&scope=email,publish_actions"; 

    $signed_request = $_REQUEST["signed_request"]; 

    list($encoded_sig, $payload) = explode('.', $signed_request, 2); 

    $data = json_decode(base64_decode(strtr($payload, '-_', '+/')), true); 

$user_id = $data["user_id"]; 
    if (empty($data["user_id"])) { 
      echo("<script> top.location.href='" . $auth_url . "'</script>"); 
    } else { 
         $graph1 = file_get_contents ("https://graph.facebook.com/".$user_id . "/?accesstoken=" . $data["oauth_token"]); 
     $graph=json_decode($graph1,true); 
    } 



$userid = $user_id; 
$username = $graph['name']; 
$usergender = $graph['gender']; 
$useremail = $graph['email']; 

?> 

<br> 

<?php echo 'ID: ' . $userid; ?> 
<br> 
<?php echo 'Name: ' . $username; ?> 
<br> 
<?php echo 'Gender: ' . $usergender; ?> 
<br> 
<?php echo 'Email: ' . $useremail; ?> 

我甩了$圖形變量數組，看看它是什麼召開的信息，這是結果：

array(7) { ["id"]=> string(10) "1469088864" ["name"]=> string(10) "Jack Brown" ["first_name"]=> string(4) "Jack" ["last_name"]=> string(5) "Brown" ["username"]=> string(11) "thebestjack" ["gender"]=> string(4) "male" ["locale"]=> string(5) "en_GB" } 

它不包含電子郵件地址，所以顯然與訪問的問題令牌/使用訪問令牌訪問圖形。

當我去我的授權的應用程序在我的Facebook帳戶設置這個程序，它說，在「此應用程式需要您的電子郵件地址‘blahblah@yahoo.co.uk’

Answer 1

您有任何請求$_REQUEST["signed_request"]，沒有按「T的問題，如果用戶授權您的應用程序或沒有。你有它甚至還沒有登錄到Facebook的所有誰的用戶。

使用的PHP SDK來當你的「將檢索用戶的配置文件http://developers.facebook.com/docs/reference/php/facebook-api/

<?php 
require_once('php-sdk/facebook.php'); 

$config = array(
    'appId' => '211665122244023', 
    'secret' => 'YOUR_APP_SECRET', 
); 

$facebook = new Facebook($config); 
$user_id = $facebook->getUser(); 
$login_url = $facebook->getLoginUrl(array(
    scope => 'email,publish_actions', 
    redirect_uri => $canvas_page,)); 

if($user_id) { 
    try { 
    $user_profile = $facebook->api('/' . $user_id,'GET'); 
    $userid = $user_id; 
    $username = $user_profile['name']; 
    $usergender = $user_profile['gender']; 
    $useremail = $user_profile['email']; 

    } catch(FacebookApiException $e) { 
    echo("<script> top.location.href='" . $login_url . "'</script>"); 
    error_log($e->getType()); 
    error_log($e->getMessage()); 
    } 
} else { 
    echo("<script> top.location.href='" . $login_url . "'</script>"); 
} 
?> 
<?php if (isset($useremail)) : ?> 
<br> 
<?php echo 'ID: ' . $userid; ?> 
<br> 
<?php echo 'Name: ' . $username; ?> 
<br> 
<?php echo 'Gender: ' . $usergender; ?> 
<br> 
<?php echo 'Email: ' . $useremail; ?> 
<?php endif; ?>