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我无法理解这个问题。我按照https://developers.facebook.com/docs/php/howto/postwithgraphapi/上的教程进行操作。

但是,我无法发布指向用户墙的链接。以下是我的代码:

<?php
error_reporting(E_ALL); ini_set('display_errors', 'On'); 
require 'src/facebook.php';
$facebook = new Facebook(array(
  'appId'  => 'XXX',
  'secret' => 'XXXXX',
)); 
$user = $facebook->getUser();
if ($user) {
  try {
    $user_profile = $facebook->api('/me');
  } catch (FacebookApiException $e) {
    error_log($e);
    $user = null;
  }
}
if($user) {
  try {
    $ret_obj = $facebook->api('/me/feed', 'POST',
      array(
        'link' => 'www.example.com',
        'message' => 'Posting with the PHP SDK!'
    ));
    echo '<pre>Post ID: ' . $ret_obj['id'] . '</pre>';

    // Give the user a logout link 
    echo '<br /><a href="' . $facebook->getLogoutUrl() . '">logout</a>';
  } catch(FacebookApiException $e) {
    $login_url = $facebook->getLoginUrl(array(
      'scope' => 'publish_stream'
    )); 
    echo 'Please <a href="' . $login_url . '">login.</a>';
    error_log($e->getType());
    error_log($e->getMessage());
  }   
} else {
  // No user, so print a link for the user to login
  // To post to a user's wall, we need publish_stream permission
  // We'll use the current URL as the redirect_uri, so we don't
  // need to specify it here.
  $login_url = $facebook->getLoginUrl(array('scope' => 'publish_stream'));
  echo 'No user...Please <a href="' . $login_url . '">login.</a>';
}  
?>

我已启用错误报告,但无法显示任何错误。输出总是:

“请登录。”

当我单击链接时,从 facebook 重定向后,再次显示相同的消息。

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