Eternal reloading page with Internet Explorer

Question

I\'ve got a problem with my FB apps with Internet Explorer 7.

I\'m using this piece of code, provided by FB some time ago :

$auth_url = \"http://www.         


        

Answer 1

https://gist.github.com/2765933 has a solution in Sinatra/Ruby that helped me with this issue!

I found it to be the p3p issue, I just wanted to post some sample code for anyone who finds this after me.

Answer 2

Couldn't get you code to work either, it just reloaded. Seems $_REQUEST["signed_request"] was never set.

But I got it to work with the code from http://developers.facebook.com/docs/authentication/

   <?php
   $app_id = "your app id";
   $app_secret = "your app secret";
   $my_url = "your app url";

   session_start();
   $code = $_REQUEST["code"];

   if(empty($code)) {
     $_SESSION['state'] = md5(uniqid(rand(), TRUE)); //CSRF protection
     $dialog_url = "http://www.facebook.com/dialog/oauth?client_id=" 
       . $app_id . "&redirect_uri=" . urlencode($my_url) . "&state="
       . $_SESSION['state'];

     echo("<script> top.location.href='" . $dialog_url . "'</script>");
   }

   if($_REQUEST['state'] == $_SESSION['state']) {
     $token_url = "https://graph.facebook.com/oauth/access_token?"
       . "client_id=" . $app_id . "&redirect_uri=" . urlencode($my_url)
       . "&client_secret=" . $app_secret . "&code=" . $code;

     $response = file_get_contents($token_url);
     $params = null;
     parse_str($response, $params);

     $graph_url = "https://graph.facebook.com/me?access_token=" 
       . $params['access_token'];

     $user = json_decode(file_get_contents($graph_url));
     echo("Hello " . $user->name);
   }
   else {
     echo("The state does not match. You may be a victim of CSRF.");
   }

That said, I would recommend you to use the Facebook PHP SDK, http://developers.facebook.com/docs/reference/php/ that makes programming facebook apps easier.

EDIT: using the PHP SDK

To authenticate with the PHP SDK, you would do something like the following:

// update this to where you've stored the facebook PHP SDK
require '../src/facebook.php';

$facebook = new Facebook(array(
  'appId'  => 'your app id',
  'secret' => 'your app secret',
));

$user = $facebook->getUser();
if ($user) {
  print "You've logged in!";
} else {
  echo("<script> top.location.href='" . $facebook->getLoginUrl() . "'</script>");
}

EDIT: headers

Also, try setting this in the first lines of you code:

ini_set('session.use_trans_sid', 1);
header('P3P:CP="IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT"');

This helped me when the fb session was lost sometimes in an app. Found that in this post: How to properly handle session and access token with Facebook PHP SDK 3.0?