facebook图形api访问令牌错误

Question

我使用基于#unificationengine API的以下curl代码访问facebook图形api并在facebook上发布消息：

$post_msg = json_encode(
        array(
            'message' =>
                array(
                    'receivers' =>
                        array(
                                array(
                                    'name'      => 'Me',
                                    'address'   => 'https://graph.facebook.com/v2.5/7/feed?access_token='.$request->access_token,
                                    'Connector' => 'facebook'

                                ),
                        ),
                        'sender'    =>
                        array('address' => 'sender address'),
                        'subject'   => 'Hello',
                        'parts'     =>
                        array(
                                array(
                                    'id'          => '1',
                                    'contentType' => 'text/plain',
                                    'data'        => 'Hi welcome to UE',
                                    'size'        => 100,
                                    'sort'        => 0

                            ),
                        ),
                    ),

                )
            );



    $ch = curl_init('https://apiv2.unificationengine.com/v2/message/send');
    curl_setopt($ch, CURLOPT_USERPWD, "ab33333222b-acb5-49a6-a766-80d991daff41:43433232-33cb-49f0-3333-3fe6c46acb5f");
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
     curl_setopt($ch, CURLOPT_VERBOSE, true); 
    curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $post_msg);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);




    // execute!
    $response = curl_exec($ch);

    // close the connection, release resources used
    curl_close($ch);

    // do anything you want with your response
    var_dump($response);



    return ['label' =>$response];

代码498的访问令牌错误无效。我参考了许多关于这个话题的帖子，但不知道缺少了什么。

如何检查facebook访问令牌的有效性。

参考了以下问题：

1. SO question 1
2. SO question 2

Answer 1

facebook访问令牌的生命周期约为两个小时。对于更长寿的web应用程序，特别是服务器端，需要生成长寿命的令牌。长寿的代币一般持续60天左右。

UE具有刷新facebook令牌的能力。在使用"apiv2.unificationengine.com/v2/connection/add"；api调用添加连接之后，您应该调用"apiv2.unificationengine.com/v2/connection/refresh"；api来使短寿命令牌变为长寿命令牌。