Question

我的应用程序中出现以下错误，要求用户使用facebook帐户登录：警告：session_start（）[function.session-start]：无法发送会话cookie - 已经发送的标头（输出从XXXXXXXXXXXXXXXXXXXXXXXXXXXXX /开始show.php：4）在第37行的XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX / lib / facebook.php中

警告：session_start（）[function.session-start]：无法发送会话缓存限制器 - 在第37行的XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX / lib / facebook.php中已经发送的报头（输出从XXXXXXXXXXXXXXXXXXXXXXXXXXXXXX / show.php：4开始）

我不知道为什么会出现这个错误，尽管我在phpcloud.com上托管我的应用程序时没有出现这个错误

以下是show.php的代码

<?php
$id=$_GET['id'];
include('lib/db.php');
require 'lib/facebook.php';
require 'lib/fbconfig.php';

// Connection...
$user = $facebook->getUser();
if ($user)
 {
 $logoutUrl = $facebook->getLogoutUrl();
 try {
 $userdata = $facebook->api('/me');
 } catch (FacebookApiException $e) {
error_log($e);
$user = null;
 }
$_SESSION['facebook']=$_SESSION;
$_SESSION['userdata'] = $userdata;
$_SESSION['logout'] =  $logoutUrl;
header("Location: home.php?id=$id");
}
else
{ 
$loginUrl = $facebook->getLoginUrl(array( 'scope' => 'user_about_me,user_activities,user_birthday,user_checkins,user_education_history,user_events,user_groups,user_hometown,user_interests,user_likes,user_location,user_notes,user_online_presence,user_photo_video_tags,user_photos,user_relationships,user_relationship_details,user_religion_politics,user_status,user_videos,user_website,user_work_history,email,read_friendlists,read_insights,read_mailbox,read_requests,read_stream,xmpp_login,ads_management,create_event,manage_friendlists,manage_notifications,offline_access,publish_checkins,publish_stream,rsvp_event,sms,publish_actions,manage_pages'
));
echo '<div class="style1"><a target="_top" href="'.$loginUrl.'"><img src="facebook.png" title="Login with Facebook" /></a></div>';
 }
 ?>

这是facebook.php代码：

 <?php
 require_once "base_facebook.php";
 class Facebook extends BaseFacebook
 {
   public function __construct($config) {
     if (!session_id()) {
       session_start();
     }
     parent::__construct($config);
   }

   protected static $kSupportedKeys =
     array('state', 'code', 'access_token', 'user_id');
   protected function setPersistentData($key, $value) {
     if (!in_array($key, self::$kSupportedKeys)) {
       self::errorLog('Unsupported key passed to setPersistentData.');
       return;
     }
     $session_var_name = $this->constructSessionVariableName($key);
     $_SESSION[$session_var_name] = $value;
   }
   protected function getPersistentData($key, $default = false) {
     if (!in_array($key, self::$kSupportedKeys)) {
       self::errorLog('Unsupported key passed to getPersistentData.');
       return $default;
     }
     $session_var_name = $this->constructSessionVariableName($key);
     return isset($_SESSION[$session_var_name]) ?
       $_SESSION[$session_var_name] : $default;
   }

   protected function clearPersistentData($key) {
     if (!in_array($key, self::$kSupportedKeys)) {
       self::errorLog('Unsupported key passed to clearPersistentData.');
       return;
     }
     $session_var_name = $this->constructSessionVariableName($key);
     unset($_SESSION[$session_var_name]);
   }
   protected function clearAllPersistentData() {
     foreach (self::$kSupportedKeys as $key) {
       $this->clearPersistentData($key);
     }
   }
   protected function constructSessionVariableName($key) {
     return implode('_', array('fb',
                      $this->getAppId(),
                      $key));
      }
    }
    ?>

现在这里是fbconfig.php

    <?php
    //Facebook Application Configuration.
    $facebook_appid='XXXXXXXXXXXXXXXXXXX';
    $facebook_app_secret='XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX';
    $facebook = new Facebook(array(
    'appId'  => $facebook_appid,
    'secret' => $facebook_app_secret,
    ));
    ?>

我在这篇文章（什么是输出缓冲？）中找到了一个主要线程，它声明输出缓冲是解决这些问题的方法。如果是的话，我应该在哪里添加它？在show.php或facebook.php以及如何添加它？

Answer 1

请打开您在记事本中修改的php文件和另存为ANSI然后FTP回到服务器。解决!!!

无法发送会话cookie - 在请求facebook API时已发送的标头

1 个答案: