Question

My Code:

$url = $fb->getLoginUrl(array('scope'=>'email','next'=>'http://apps.facebook.com/APPID/'));
echo "<script> top.location=\"".$url."\"; </script>";

I need to redirect the user to apps URL of my application when authetication is successfull but it always redirect to my redirect_uri page.

how can i fix it?

thanks.

Answer 1

You have to change this URL to redirect you app where you want after authentication.

OR You can Do this

First of all, you don’t have to edit PHP SDK, below is the sample for authenticating the user and then redirecting to your landing page,

Make sure you replace:

YOUR-APP-ID-HERE with Your facebook application id,

YOUR-APP-API-SECRET-HERE with Your facebook application secret key

YOUR-REDIRECT-URL-HERE with Your landing page URL

<?php

    // Requires Facebook PHP SDK 3.0.1: https://github.com/facebook/php-sdk/
    require ('facebook.php');

    define('FACEBOOK_APP_ID',"YOUR-APP-ID-HERE");
    define('FACEBOOK_SECRET',"YOUR-APP-API-SECRET-HERE");
    define('REDIRECT_URI',"YOUR-REDIRECT-URL-HERE");
    $user = null;

    $facebook = new Facebook(array(
        'appId' => FACEBOOK_APP_ID,
        'secret' => FACEBOOK_SECRET,
        'cookie' => true
    ));

    $user = $facebook->getUser(); // Get the UID of the connected user, or 0 if the Facebook user is not connected.

    if($user == 0) {
        // If the user is not connected to your application, redirect the user to authentication page
        /**
         * Get a Login URL for use with redirects. By default, full page redirect is
         * assumed. If you are using the generated URL with a window.open() call in
         * JavaScript, you can pass in display=popup as part of the $params.
         * 
         * The parameters:
         * - redirect_uri: the url to go to after a successful login
         * - scope: comma separated list of requested extended perms
         */

        $login_url = $facebook->getLoginUrl($params = array('redirect_uri' => REDIRECT_URI));

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

    } else {
        // if the user is already connected, then redirect them to landing page or show some content
        echo ("<script> window.location.href='".REDIRECT_URI."'</script>");
    }

?>

If you want to get extended permissions, then simply add another “scope” parameter to the login url, ex:

$login_url = $facebook->getLoginUrl($params = array('redirect_uri' => REDIRECT_URI,'scope' => 'comma-separated-list-of-requested-extended-perms'));