Facebook SDK v5发布为Wall上的页面

Question

我有下面的代码片段,它可以在Facebook上作为我自己的用户帐户在Facebook页面上发布.

这些值FACEBOOK_*在代码库中先前定义.

// SDK Version 5.0
$fb = new Facebook\Facebook([
    'app_id' => FACEBOOK_APP_ID,
    'app_secret' => FACEBOOK_APP_SECRET,
    'default_graph_version' => 'v2.4',
]);

// Returns a `Facebook\FacebookResponse` object
$response = $fb->post('/'.FACEBOOK_PAGE_ID.'/feed', $postData, FACEBOOK_ACCESS_TOKEN);

$postId = $response->getGraphNode();

现在我的问题是如何让它作为实际页面发布而不是我的帐户,即页面的管理员.

我已经看过SDK文档,我一直在圈子里,有很多v4的例子,但因为它已被弃用,我试图使用v5,似乎无法弄明白,任何链接发布归因或模仿,我发现在SDK的v5中是死链接.

从我所看到的,我需要打电话给/ {user-id}/accounts以从我的用户那里获取该页面的访问令牌,https://developers.facebook.com/docs/facebook-login/access-令牌#pagetokens

但是为了得到一个{user-id} 我必须查询用户,使用SDK文档中的以下示例:

// Make sure to load the Facebook SDK for PHP via composer or manually
use Facebook\FacebookRequest;
use Facebook\GraphUser;
use Facebook\FacebookRequestException;

if($session) {
try {
    $user_profile = (new FacebookRequest(
        $session, 'GET', '/me'
    ))->execute()->getGraphObject(GraphUser::className());
    echo "Name: " . $user_profile->getName();
} catch(FacebookRequestException $e) {
    echo "Exception occured, code: " . $e->getCode();
    echo " with message: " . $e->getMessage();
} 

这里的问题是我不知道如何获得一个我需要获取用户数据的会话,这些会话允许我将访问令牌传递到我上面的代码片段中,这样我就能理解这一切正确!？

任何帮助非常感谢!

Answer 1

我使用类,所以我将代码调整到上面的示例中.经过测试和运行的代码.

在使用您使用的方法获取用户访问令牌后(请参阅此处的指南),我们必须获取长期访问令牌.将其添加到您的代码中:

session_start();
$helper = $fb->getRedirectLoginHelper();

try {
  $accessToken = $helper->getAccessToken();
} catch(Facebook\Exceptions\FacebookSDKException $e) {
  // There was an error communicating with Graph
  echo $e->getMessage();
  exit;
}

if (isset($accessToken)) {

    $client = $fb->getOAuth2Client();

    try {
      $accessToken = $client->getLongLivedAccessToken($accessToken);
    } catch(Facebook\Exceptions\FacebookSDKException $e) {
      echo $e->getMessage();
      exit;
    }


  $response = $fb->get('/me/accounts', (string) $accessToken);

    foreach ($response->getDecodedBody() as $allPages) {
        foreach ($allPages as $page ) {               

            if (isset($page['id']) && $page['id'] == $pageId) { // Suppose you save it as this variable
                $appAccessToken = (string) $page['access_token'];
                break;
            }
        }
    }

    $response = $fb->post(
        '/'.$pageId.'/feed',
        array(
            "message" => "Message",
            "link" => "http://www.example.com",
            "picture" => "http://www.example.net/images/example.png",
            "name" => "Title",
            "caption" => "www.example.com",
            "description" => "Description example"
        ),
        $appAccessToken
    );

    // Success
    $postId = $response->getGraphNode();
    echo $postId;

} elseif ($helper->getError()) {
  var_dump($helper->getError());
  var_dump($helper->getErrorCode());
  var_dump($helper->getErrorReason());
  var_dump($helper->getErrorDescription());
  exit;
}

说明:您必须知道您是哪个页面的管理员:

$response = $fb->get('/me/accounts', (string) $accessToken);

然后搜索表以检索the access token of the page我们感兴趣的内容(我选择了引用页面的id).

最后,只需运行SDK提供的post函数:

$response = $fb->post(
    '/'.$pageId.'/feed',
    array(
        "message" => "Message",
        "link" => "http://www.example.com",
        "picture" => "http://www.example.net/images/example.png",
        "name" => "Title",
        "caption" => "www.example.com",
        "description" => "Description example"
    ),
    $appAccessToken
);