＆＃34;用户未授权应用程序执行此操作＆＃34;在facebook发布时收到错误

Question

我正在研究facebook post功能，因为我使用的是facebook php sdk，但是它给了我错误，例如＆＃34;（＃200）用户没有授权应用程序执行此操作＆＃34; ，有谁能告诉我这个问题是什么？

这是我的代码：

<?php

require '../src/facebook.php';

// initialize Facebook class using your own Facebook App credentials
// see: https://developers.facebook.com/docs/php/gettingstarted/#install
$config = array();
$config['appId'] = '*****';
$config['secret'] = '*****';
$config['fileUpload'] = false; // optional
$config['scope'] = 'publish_actions';
$config['redirect_uri'] = 'https://www.myapp.com/post_login_page';

$fb = new Facebook($config);


// define your POST parameters (replace with your own values)
$params = array(
  "access_token" => "*****", // see: https://developers.facebook.com/docs/facebook-login/access-tokens/
  "message" => "This is just testing message",
  "link" => "http://www.pontikis.net/blog/auto_post_on_facebook_with_php",
  //"picture" => "http://i.imgur.com/lHkOsiH.png",
  "name" => "How to Auto Post on Facebook with PHP",
  "caption" => "www.pontikis.net",
  "description" => "Testing description message"
);



// post to Facebook
// see: https://developers.facebook.com/docs/reference/php/facebook-api/
try {
  $ret = $fb->api('/*****/feed', 'POST', $params);
  echo 'Successfully posted to Facebook';
} catch(Exception $e) {
  echo $e->getMessage();
}

die;