一旦我已经拥有访问令牌，如何使用 php 在服务器上获取 Facebook 用户电子邮件

Question

我成功地从我的 Android 应用程序中获得了访问令牌...

  fbbutton = (com.facebook.login.widget.LoginButton) findViewById(R.id.fbbutton);
  fbbutton.setOnClickListener(this);
  fbbutton.setReadPermissions(Arrays.asList("public_profile", "email"));
  callbackManager = CallbackManager.Factory.create();
  fbbutton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {

    @Override
    public void onSuccess(LoginResult loginResult) {
      GraphRequest request = GraphRequest.newMeRequest(loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
        @Override
        public void onCompleted(JSONObject object, GraphResponse response) {
          if (response.getError() != null) {

          } else {

            if ((email = object.optString("email")) != null) {

            } else {
              email = object.optString("id") + "@facebook.com";
            }
            editor.putString("ftoken", AccessToken.getCurrentAccessToken().toString());
            editor.apply();
            Intent intent = new Intent(getApplicationContext(), MainActivity.class);
            startActivity(intent);
            finish();
          }
        }
      });
      Bundle parameters = new Bundle();
      parameters.putString("fields", "id, name, email"); // facebook parameters
      request.setParameters(parameters);
      request.executeAsync();

      // signed in UI
    }

然后我成功地将访问令牌发送到我服务器的 php 脚本。

我正在尝试让 facebook 使用访问令牌在服务器端给我用户的电子邮件。

我正在努力...

        require_once __DIR__ . '/facebook-php-sdk-v4/src/Facebook/autoload.php';

(...)

        $fb = new Facebook\Facebook([
            'app_id' => '491680537671890',
            'app_secret' => 'abe9f51094b3d7c9edb3c28d102170a1',
            'default_graph_version' => 'v2.4'
        ]);
        fwrite($Handle, "point 1");

            $response = $fb->get('/me', $ftoken);

        //print_r($response);
        fwrite($Handle, "response:$response\n\n");
        $email = $response["email"];
        $userid = $email;
        fwrite($Handle, "email confirmed by facebook:[$email]\n\n");

但是我的 php 代码只能到达 "point 1"。所以它在 $fb->get 阶段失败了。我究竟做错了什么？感谢您的帮助。

编辑：我忘了在最后一个数组项后面加逗号

$fb = new Facebook\Facebook([
            'app_id' => '491680537671890',
            'app_secret' => 'abe9f51094b3d7c9edb3c28d102170a1',
            'default_graph_version' => 'v2.4',
        ]);

现在我的代码甚至没有到达 点 1。

编辑：逗号显然无关紧要，但我把它去掉了，我又回到了 点 1 [我错了，逗号真的没有什么区别] .但是 var_dumps 出现空的，因为我在下面编程..

$ftoken = $json->ftoken;
fwrite($Handle, "ftoken:$ftoken\r\n");
$fb = new Facebook\Facebook([
    'app_id' => '491680537671890',
    'app_secret' => 'abe9f51094b3d7c9edb3c28d102170a1',
    'default_graph_version' => 'v2.4'
]);
$vardump = var_dump($fb);
fwrite($Handle, "first vardump:$vardump\n\n");

$response = $fb->get('/me?fields=id,name', $ftoken);
$vardump = var_dump($response);
fwrite($Handle, "vardump:$vardump\n\n");

编辑：#3：我实现了以下建议的代码...

$ftoken = $json->ftoken;
        fwrite($Handle, "ftoken:$ftoken\r\n");
        $fb = new Facebook\Facebook([
                'app_id' => '491680537671890',
                'app_secret' => 'abe9f51094b3d7c9edb3c28d102170a1',
                'default_graph_version' => 'v2.4'
        ]);
        $fb->setDefaultAccessToken($ftoken);

        try {
            $response = $fb->get('/me');
            $userResponse = $response->getGraphUser();
        } catch(Facebook\Exceptions\FacebookResponseException $e) {
            // When Graph returns an error
            $userResponse = 'Graph returned an error: ' . $e->getMessage();
        } catch(Facebook\Exceptions\FacebookSDKException $e) {
            // When validation fails or other local issues
            $userResponse = 'Facebook SDK returned an error: ' . $e->getMessage();
        }finally{
            fwrite($Handle, "response:$userResponse\n\n");
            }

然后我得到...

response:Graph returned an error: Invalid OAuth access token.

所以我的令牌类型似乎不正确？

编辑：#4：我进入了 facebook 对象调试页面并输入了令牌...

Access Token Info
App ID  xxxxxxxxxxxxxxxxx : recipes
User ID
xxxxxxxxxxxxxxxxxxxxxxxxx : Rxxn Kxxm
User last installed this app via API v2.x
Issued  1451792399 (20 hours ago)
Expires 1456976399 (in about 2 months)
Valid   True
Origin  Mobile Web Faceweb
Scopes  email, public_profile

所以令牌应该没有任何实际问题。我被难住了。

Answer 1

您可以尝试以下方法

$ftoken = $json->ftoken;
fwrite($Handle, "ftoken:$ftoken\r\n");
$fb = new Facebook\Facebook([
        'app_id' => '491680537671890',
        'app_secret' => 'abe9f51094b3d7c9edb3c28d102170a1',
        'default_graph_version' => 'v2.4'
]);
$fb->setDefaultAccessToken($ftoken);

try {
    $response = $fb->get('/me');
    $userResponse = $response->getGraphUser();
} catch(Facebook\Exceptions\FacebookResponseException $e) {
    // When Graph returns an error
    $userResponse = 'Graph returned an error: ' . $e->getMessage();
} catch(Facebook\Exceptions\FacebookSDKException $e) {
    // When validation fails or other local issues
    $userResponse = 'Facebook SDK returned an error: ' . $e->getMessage();
}finally{
    fwrite($Handle, "response:$userResponse\n\n");
}

看看我们得到了什么...

确保您的域在您的应用设置中！

一旦我已经拥有访问令牌，如何使用 php 在服务器上获取 Facebook 用户电子邮件

How to get Facebook user email on server with php once I already have the access token

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