facebook PHP SDK redirect_uri到页面选项卡

Question

im using the PHP SDK to get user to authorize my app. the thing that is a bit tricky is that i;m doing this inside a tab. the redirect uri will break the tab 'iframe' and just open as a normal app,i do not want this. how can i keep it inside the page tab iframe. below is my code;

<?php

include("utility.php");
include("db_setup.php");
require_once "base_facebook.php";
require("facebook.php");
$facebook = new Facebook(array(
    'appId'  => 'xxxxxx',
    'secret' => 'xxxxxx',
));

$conn = connectUserDB();
$user = $facebook->getUser();
if ($user) {
    try {
        // Proceed knowing you have a logged in user who's authenticated.

          //$user_profile = $facebook->api('/me?fields=name,id,email');

header( 'Location: submitted.php' ) ;

       } catch (FacebookApiException $e) {
    //print_r($e);
        $user = null;
    }
}
// $user is null : $user is either not logged in or the token is not valid
else if(!$user) { 
$params = array(
'scope' => 'email',
'redirect_uri' => 'submitted.php'
);

$loginUrl = $facebook ->getLoginUrl($params);

echo '<script type="text/javascript">';
echo 'top.location.href = " '.$loginUrl.' " ; ';
echo '</script>';
}

?>

Answer 1

If you need to log in user without having him/her leave your tab, you could use javascript SDK (you can call function FB.login() which will open popup).

If you want to keep using php, on your "normal app" (the page that gets opened in iframe on Facebook) you can simply make a redirect back to your tab on Facebook. So that after user gets logged in and redirected to your page, you redirect him back to Facebook tab.