Facebook sends a blank signed request when secure browsing is enabled
<p>I just want to ask a question about Facebook "signed_request" thing. Its return null value when secure browsing is enabled in facebook user account.
I used this code...`</p>

<pre><code>    &lt;?php
    // Create our Application instance (replace this with your appId and secret).
    $facebook = new Facebook(array(
      'appId'  =&gt; $applicationID,
      'secret' =&gt; $applicationSecret,
    ));

    $signed_request = $facebook-&gt;getSignedRequest();

    $page_id = $signed_request["page"]["id"];
    $like_status = $signed_request["page"]["liked"];

    if ($like_status) 
    {
    echo "You like us";
    }
    else
    {
    echo "You not like us";
    }


?&gt;
</code></pre>

<p>thanks...</p>
