Facebook Application Tab -> External Linking with PHP

Question

I currently have an Application on the Facebook Tab, and am wondering if there is a way for me to deep link into an item on that app tab. Example:

User is in the applic

Answer 1

For those that need a full (yet minimal working) example (like myself) here is the index.php which does the deep-linking when needed. Make sure you've downloaded the Facebook PHP SDK and that your require path points to it. (Obviously, you also need to replace the $app_id and $app_secret with your own app info.)

 $app_id,
    'secret' => $app_secret
));

$signed_request = $facebook->getSignedRequest();

// Get app_data from signed request POST
$app_data = $signed_request["app_data"];

// Parse app_data & Re-direct
if ($app_data) {
    header("HTTP/1.1 302 Found");
    header("Location: {$app_data}");
exit;
}

?>



    


    
Landing Page

Also, make sure that within your FB App Settings, all your URL paths (i.e. Canvas URL, Page Tab URL, etc) end with a backslash, or else you'll get some 301 redirect errors.

Once your app is setup and you've added it your fan page, you can deep link with something like:

http://www.facebook.com/pages/MYFANPAGE/XXXXX?sk=app_XXXXX&app_data=sub/another.php

You may have to parse the actual app_data value before using it, but for me it worked just as above.

Hope that helps others out there. Of course, Facebook may change all this at any time.