Trouble using Facebook App - php

Question

I am trying to use FB App for auto posting. I have been trying to use the SDK from facebookapi as well as facebook-php-sdk-master
However, i am having trouble with setting up the Uris and domains on the FB App settings. I have tried all combinations - with 'localhost', with actual site domain 'landshoppe.com', with 'www', without 'www' etc. I am not able to understand what exactly needs to be entered into the Uri fields !
If somebody can explain and help me get the script working, I will be obliged.
I am attaching screenshots of what I am doing.
In the Basic FB settings, I have tried adding http://localhost as well as http://landshoppe.com
In the Site Url also I have tried same
In the Advanced settings, redirect Deauthorize Callback URL also I have tried these Uris
I have whitelisted IPs 127.0.0.1 and my server IP
Client OAuth Login, Web OAuth Login and
Embedded Browser OAuth Login tabs say 'Yes'
I have got 'http://localhost/fb-tokens/' in Valid OAuth redirect URIs
My Script settings are
$appid = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxx';
$appsecret = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxx';
$pageId = '530139960390619';
$msg = 'Buy/Sell/rent Property in India. Redevelopment, Joint Ventures, Auction Properties';
$title = 'Landshoppe-The Property Destination';
$uri = 'http://localhost/'; //I have tried all combinations here
$desc = 'Buy an Apartment, Rent an Apartment,Land for Redevelopment, Land for sale, Commercial Property';
$pic = 'http://www.landshoppe.com/images/logo.jpg';
$action_name = 'Post to FB';
$action_link = 'http://www.landshoppe.com/';
$facebook = new Facebook(array(
'appId' => $appid,
'secret' => $appsecret,
'cookie' => false,
));
$user = $facebook->getUser();
// Contact Facebook and get token
if ($user) {
// you're logged in, and we'll get user acces token for posting on the wall
try {
$page_info = $facebook->api("/$pageId?fields=access_token");
if (!empty($page_info['access_token'])) {
$attachment = array(
'access_token' => $page_info['access_token'],
'message' => $msg,
'name' => $title,
'link' => $uri,
'description' => $desc,
'picture'=>$pic,
'actions' => json_encode(array('name' => $action_name,'link' => $action_link))
);
$status = $facebook->api("/$pageId/feed", "post", $attachment);
} else {
$status = 'No access token recieved';
}
} catch (FacebookApiException $e) {
error_log($e);
$user = null;
}
} else {
// you're not logged in, the application will try to log in to get a access token
header("Location:{$facebook->getLoginUrl(array('scope' => 'photo_upload,user_status,publish_stream,user_photos,manage_pages'))}");
}
echo $status;
I am getting errors like
>
URL Blocked: This redirect failed because the redirect URI is not whitelisted in the app’s Client OAuth Settings. Make sure Client and Web OAuth Login are on and add all your app domains as Valid OAuth Redirect URIs.
>
And
>
'Cannot Load Url' because it is not added in App Domains'
>
I am at my wits end ! Kindly help me understand what needs to be the Uris that should be used in all these places.