Facebook SDK v4 it does not redirect - php

Question

Hello I am working with the sdk v4 facebook and when I login it does not redirect but generates the code ( In low image Link when I log ) Someone can help ?
Image
Code
<?php
session_start();
// Define the root directoy
define( 'ROOT', dirname( __FILE__ ) . '/' );
// Autoload the required files
require_once( ROOT . 'autoload.php' );
use Facebook\FacebookSession;
use Facebook\FacebookRedirectLoginHelper;
use Facebook\FacebookRequest;
use Facebook\FacebookSDKException;
//Dados API
$app_id = '346646635512123';
$app_secret = '21h3vj12i312b3hj123';
$redirect_uri = 'http://localhost:8888/Facebook/';
// Permissoes
$permissions = array('email', 'user_location', 'user_birthday', 'manage_pages', 'publish_actions', 'user_photos');
FacebookSession::setDefaultApplication($app_id, $app_secret);
$helper = new FacebookRedirectLoginHelper($redirect_uri);
try {
$session = $helper->getSessionFromRedirect();
} catch(Exception $ex) {
// When validation fails or other local issues
}
if (isset( $session)) {
echo'Estou Ligado';
}
else
{
echo "Login With Facebook";
}
?>

Answer 1

You don´t have any redirection in your code, that is why. You need to click on that login link to get to the authorization screen. I think you misunderstood "FacebookRedirectLoginHelper", it is usefuly AFTER a redirection from the authorization screen.
I would suggest using the JS SDK for authorization though. Much easier to handle, no redirection needed, no PHP needed, ...