facebook $ facebook-> getSignedRequest（）;错误 [英] facebook $facebook->getSignedRequest(); error

问题描述

  $ signed_request = 
我正在尝试将此脚本添加到我的iframe应用程序在Facebook上，但似乎不起作用： $ facebook-> getSignedRequest（）; 
 $ like_status = $ signed_request [page] [喜欢]; 
 //如果一个粉丝在你的页面上
 if（$ like_status）{
 echo 123; 
} else {
 //如果一个非风扇在你的页面上
 echo 456; 
} 
  

我正在放置正确的应用ID和密钥，并调用facebook.php正确的方式。我没有错误或警告，只是脚本不起作用。

$ like_status 不返回任何

脚本是否更改？还有另外一个版本吗？
谢谢

编辑。更多的代码：

 <？php 
 require'facebook.php'; 
 $ app_id =11549508592; 
 $ app_secret =d898cb58b16f2aaaaaaaaaaaaaa; 
 $ facebook = new Facebook（array（
'appId'=> $ app_id，
'secret'=> $ app_secret，
'cookie'=> true 
））; 
 $ signed_request = $ facebook-> getSignedRequest（）; 
 $ like_status = $ signed_request [page] [喜欢]; 
 echo< br> like status = $ like_status; 
？> 
  

解决方案

Facebook将签名的请求发送到您的页面

所以：

  $ signed_request = $ _REQUEST [ signed_request]; 
 list（$ encoded_sig，$ payload）= explode（'。'，$ signed_request，2）; 
 $ data = json_decode（base64_decode（strload（$ payload，'-_'，'+ /'）），true）; 
  

i am trying to add this script to my iframe app on facebook but it seems not to work:

    $signed_request = $facebook->getSignedRequest();
$like_status = $signed_request["page"]["liked"];
// If a fan is on your page
if ($like_status) {
echo 123;
} else {
// If a non-fan is on your page
echo 456;
}

i am placing the right app id and secret key and im calling facebook.php the right way. I get no errors or warnings, just that the script doesn't work.

$like_status doesn't return anything

did the script changed? is there another version? thanks

edit. more code:

<?php
require 'facebook.php';
$app_id = "11549508592";
$app_secret = "d898cb58b16f2aaaaaaaaaaaaaa";
$facebook = new Facebook(array(
    'appId' => $app_id,
    'secret' => $app_secret,
    'cookie' => true
));
$signed_request = $facebook->getSignedRequest();
$like_status = $signed_request["page"]["liked"];
echo "<br>like status = $like_status";
?>

解决方案

Facebook sends the signed request to your page when it is called from facebook.

So:

$signed_request = $_REQUEST["signed_request"];
list($encoded_sig, $payload) = explode('.', $signed_request, 2);
$data = json_decode(base64_decode(strtr($payload, '-_', '+/')), true);

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