Facebook SDK PHP顯示用戶的電子郵件地址

Question

所以我使用Facebook的Facebook的Facebook登錄，並按照他們的文檔，因爲它顯示，雖然我似乎無法弄清楚如何回顯用戶的電子郵件地址？

我可以看到它並拿起電子郵件雖然電子郵件地址不會在元數據顯示：

object(Facebook\Authentication\AccessTokenMetadata)#17 (1) { ["metadata":protected]=> array(7) { ["app_id"]=> string(15) "1234565678" ["application"]=> string(4) "PLFT" ["expires_at"]=> object(DateTime)#21 (3) { ["date"]=> string(26) "2017-06-11 10:47:32.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } ["is_valid"]=> bool(true) ["issued_at"]=> object(DateTime)#22 (3) { ["date"]=> string(26) "2017-04-12 10:47:32.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" } ["scopes"]=> array(2) { [0]=> string(5) "email" [1]=> string(14) "public_profile" } ["user_id"]=> string(16) "36346346346346" } } 

這裏是我使用的腳本：

<? 
session_start(); 
include 'system/db.php'; 
require_once 'fb_connect/autoload.php'; 

$fb = new Facebook\Facebook([ 
    'app_id' => '346364326346346', 
    'app_secret' => 'reyeryeryeryeerwyer346436', 
    'default_graph_version' => 'v2.5', 
]); 

$helper = $fb->getRedirectLoginHelper(); 

try { 
    $accessToken = $helper->getAccessToken(); 
} catch(Facebook\Exceptions\FacebookResponseException $e) { 
    // When Graph returns an error 
    echo 'Graph returned an error: ' . $e->getMessage(); 
    exit; 
} catch(Facebook\Exceptions\FacebookSDKException $e) { 
    // When validation fails or other local issues 
    echo 'Facebook SDK returned an error: ' . $e->getMessage(); 
    exit; 
} 

if (! isset($accessToken)) { 
    if ($helper->getError()) { 
    header('HTTP/1.0 401 Unauthorized'); 
    echo "Error: " . $helper->getError() . "\n"; 
    echo "Error Code: " . $helper->getErrorCode() . "\n"; 
    echo "Error Reason: " . $helper->getErrorReason() . "\n"; 
    echo "Error Description: " . $helper->getErrorDescription() . "\n"; 
    } else { 
    header('HTTP/1.0 400 Bad Request'); 
    echo 'Bad request'; 
    } 
    exit; 
} 

// Logged in 
echo '<h3>Access Token</h3>'; 
var_dump($accessToken->getValue()); 

// The OAuth 2.0 client handler helps us manage access tokens 
$oAuth2Client = $fb->getOAuth2Client(); 

// Get the access token metadata from /debug_token 
$tokenMetadata = $oAuth2Client->debugToken($accessToken); 
echo '<h3>Metadata</h3>'; 
var_dump($tokenMetadata); 
// Validation (these will throw FacebookSDKException's when they fail) 
$tokenMetadata->validateAppId('43141346436316'); // Replace {app-id} with your app id 
// If you know the user ID this access token belongs to, you can validate it here 
//$tokenMetadata->validateUserId('123'); 
$tokenMetadata->validateExpiration(); 

if (! $accessToken->isLongLived()) { 
    // Exchanges a short-lived access token for a long-lived one 
    try { 
    $accessToken = $oAuth2Client->getLongLivedAccessToken($accessToken); 
    } catch (Facebook\Exceptions\FacebookSDKException $e) { 
    echo "<p>Error getting long-lived access token: " . $helper->getMessage() . "</p>\n\n"; 
    exit; 
    } 

    echo '<h3>Long-lived</h3>'; 
    var_dump($accessToken->getValue()); 
} 

$_SESSION['fb_access_token'] = (string) $accessToken; 
print_r($_SESSION['fb_access_token']); 


// User is logged in with a long-lived access token. 
// You can redirect them to a members-only page. 
//header('Location: https://example.com/members.php'); 

?> 

任何想法，我怎麼可以在網站上顯示用戶數據？

Answer 1

獲得訪問令牌後，您可以將其傳遞給圖API以通過傳遞令牌來獲取用戶詳細信息。

 <?php 

     $fb = new \Facebook\Facebook([ 
      'app_id' => '', 
      'app_secret' => '', 
      'default_graph_version' => 'v2.8' 
     ]); 

     try { 
      // Get the \Facebook\GraphNodes\GraphUser object for the current user. 
      // If you provided a 'default_access_token', the '{access-token}' is optional. 
      $response = $fb->get('/me?fields=name,email,location,gender,birthday,hometown', $access_token); 
     } catch(\Facebook\Exceptions\FacebookResponseException $e) { 
      echo $e->getMessage(); 
     } catch(\Facebook\Exceptions\FacebookSDKException $e) { 
      // When validation fails or other local issues 
      echo $e->getMessage(); 
     } 

     // Get user details from facebook. 
     $me = $response->getGraphUser(); 

    print_r($me); 

？>