風扇門/頁一樣不與新的應用程序

Question

從幾天前的工作，這一點：

<?php $signed_request = $_REQUEST["signed_request"]; 
list($encoded_sig, $payload) = explode('.', $signed_request, 2); 
$data = json_decode(base64_decode(strtr($payload, '-_', '+/')), true); 
if (empty($data["page"]["liked"])) 
{  
echo "You are not a fan!"; 
} 
else 
{  
echo "Welcome back fan!"; 
} 
?> 

不工作，任何人都知道這是爲什麼？

Answer 1

這是工作的罰款：

<?php 
$signed_request = $_REQUEST['signed_request']; 

function parsePageSignedRequest() { 
    if (isset($_REQUEST['signed_request'])) { 
     $encoded_sig = null; 
     $payload = null; 
     list($encoded_sig, $payload) = explode('.', $_REQUEST['signed_request'], 2); 
     $sig = base64_decode(strtr($encoded_sig, '-_', '+/')); 
     $data = json_decode(base64_decode(strtr($payload, '-_', '+/'), true)); 
     return $data; 
    } 
    return false; 
    } 
    if($signed_request = parsePageSignedRequest()) { 
    if($signed_request->page->liked) { 
//fan content 
} else { 
//non-fan content 
    } 
    }