email is not coming in facebook php sdk - php

Question

This is login system in facebook php sdk,what happens it asks for basic permissions then when a user permits through his facebook account it stores his facebook id and email and then shows this fbid and email in the index through session ,but it is not working properly though fbid comes nut email is not coming it is showing blank
<?php
session_start();
require_once("autoload.php");
require_once('Facebook/FacebookSession.php');
require_once('Facebook/FacebookRedirectLoginHelper.php');
require_once('Facebook/FacebookRequest.php');
require_once('Facebook/FacebookResponse.php');
require_once('Facebook/FacebookSDKException.php');
require_once('Facebook/FacebookRequestException.php');
require_once('Facebook/FacebookAuthorizationException.php');
require_once('Facebook/GraphObject.php');
require_once('Facebook/GraphUser.php');
require_once('Facebook/GraphSessionInfo.php');
require_once( 'Facebook/HttpClients/FacebookHttpable.php' );
require_once( 'Facebook/HttpClients/FacebookCurl.php' );
require_once( 'Facebook/HttpClients/FacebookCurlHttpClient.php' );
require_once( 'Facebook/Entities/AccessToken.php' );
require_once( 'Facebook/Entities/SignedRequest.php' );
use Facebook\FacebookSession; use Facebook\FacebookRedirectLoginHelper;
use Facebook\FacebookRequest; use Facebook\FacebookResponse;
use Facebook\FacebookSDKException; use Facebook\FacebookRequestException;
use Facebook\FacebookAuthorizationException; use Facebook\GraphObject;
// init app with app id and secret
FacebookSession::setDefaultApplication( ' 332325566667346','30adsfsdf7sdf87df6s7df87sdf76dsfd16' );
// login helper with redirect_uri
$helper = new FacebookRedirectLoginHelper('http://localhost/bb/fbconfig.php' );
try {
$session = $helper->getSessionFromRedirect();
} catch( FacebookRequestException $ex ) {
// When Facebook returns an error
} catch( Exception $ex ) {
}
// see if we have a session
if ( isset( $session ) ) {
$request = new FacebookRequest( $session, 'GET', '/me' );
$response = $request->execute();
$graphObject = $response->getGraphObject();
$email = $graphObject->getProperty('email');
echo $email;
} else {
$loginUrl = $helper->getLoginUrl();
header("Location: ".$loginUrl);
}
?>

Answer 1

You are not asking for the email permission in your login process:
$loginUrl = $facebook->getLoginUrl(array('scope' => 'email'));
Source: https://developers.facebook.com/docs/reference/php/facebook-getLoginUrl
Side note: Use the autoloader OR countless require statements, not both ;) (Autoloader would be the smart option though).