Facebook登錄PHP權限

Question

我正在嘗試使用PHP創建Facebook登錄我已經在網上找到了一些我目前使用的功能。不幸的是，它只是要求提供基本的個人資料信息，我希望它也可以要求朋友。我試圖從代碼中做到這一點，但它並沒有要求許可。我如何申請許可？

Link To Website

if (isset($session)) { 
    // graph api request for user data 
    $request = new FacebookRequest($session, 'GET', '/me'); 
    $response = $request->execute(); 
    // get response 


    $graphObject = $response->getGraphObject(); 
     $fbid = $graphObject->getProperty('id');    // To Get Facebook ID 
     $fbfullname = $graphObject->getProperty('name'); // To Get Facebook full name 
     $fbfriends = $graphObject->getProperty('friends'); // To Get Facebook full name 
     $femail = $graphObject->getProperty('email'); // To Get Facebook email ID 
    /* ---- Session Variables -----*/ 
     $_SESSION['FBID'] = $fbid;   
     $_SESSION['FULLNAME'] = $fbfullname; 
     $_SESSION['FRIENDS'] = $fbfriends; 
     $_SESSION['EMAIL'] = $femail; 
    /* ---- header location after session ----*/ 
    header("Location: index.php"); 
} else { 
    $loginUrl = $helper->getLoginUrl(); 
header("Location: ".$loginUrl); 
} 

Answer 1

你需要做這樣的事情。這不是我認爲的唯一方式，但對我有用。

的index.php

<?php 

     require_once __DIR__ . '\..\src\Facebook\autoload.php'; 

    session_start(); 

    $fb = new Facebook\Facebook([ 
     'app_id' => '???', 
     'app_secret' => '???', 
     'default_graph_version' => 'v2.2', 
     ]); 

    $helper = $fb->getRedirectLoginHelper(); 

    $permissions = ['email','user_friends', 'publish_actions', 'user_posts']; //here you set all the permisions 
// (be aware that for some permisions you'll need to send your app to Facebook Review) 
    $loginUrl = $helper->getLoginUrl('http://localhost/fb-callback.php', $permissions); 

    echo htmlspecialchars($loginUrl); // this will echo the URL that needs to be clicked (something like 'Login with Facebook' button) 

    ?> 

FB-callback.php

<?php 
    require_once __DIR__ . '\..\src\Facebook\autoload.php'; 
    session_start(); 
$fb = new Facebook\Facebook([ 
    'app_id' => '???', // Replace {app-id} with your app id 
    'app_secret' => '???', 
    'default_graph_version' => 'v2.2', 
    ]); 
$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) 
$tokenMetadata->validateAppId('???'); // Replace {app-id} with your app id 
// If you know the user ID this access token belongs to, you can validate it here 
//$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; 
// 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'); 
header('Location: http://localhost/page_after_login'); 
?> 

EDIT：該代碼對應於實登錄示例從這裏：https://developers.facebook.com/docs/php/howto/example_facebook_login