facebook php sdk v5 get Access Token - php

Question

I want to get the user data of facebook.
I´m using a this example :
<?php
session_start();
require_once __DIR__ . '/src/Facebook/autoload.php';
$fb = new Facebook\Facebook([
'app_id' => 'APP_ID',
'app_secret' => 'APP_SECRET',
'default_graph_version' => 'v2.4',
]);
$helper = $fb->getRedirectLoginHelper();
$permissions = ['email']; // optional
try {
if (isset($_SESSION['facebook_access_token'])) {
$accessToken = $_SESSION['facebook_access_token'];
} else {
$accessToken = $helper->getAccessToken();
}
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
echo 'Graph returned an error: ' . $e->getMessage();
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
if (isset($accessToken)) {
if (isset($_SESSION['facebook_access_token'])) {
$fb->setDefaultAccessToken($_SESSION['facebook_access_token']);
} else {
// getting short-lived access token
$_SESSION['facebook_access_token'] = (string) $accessToken;
// OAuth 2.0 client handler
$oAuth2Client = $fb->getOAuth2Client();
// Exchanges a short-lived access token for a long-lived one
$longLivedAccessToken = $oAuth2Client->getLongLivedAccessToken($_SESSION['facebook_access_token']);
$_SESSION['facebook_access_token'] = (string) $longLivedAccessToken;
// setting default access token to be used in script
$fb->setDefaultAccessToken($_SESSION['facebook_access_token']);
}
// redirect the user back to the same page if it has "code" GET variable
if (isset($_GET['code'])) {
header('Location: ./');
}
// getting basic info about user
try {
$profile_request = $fb->get('/me?fields=name,first_name,last_name,email');
$profile = $profile_request->getGraphNode()->asArray();
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
echo 'Graph returned an error: ' . $e->getMessage();
session_destroy();
// redirecting user back to app login page
header("Location: ./");
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
// printing $profile array on the screen which holds the basic info about user
print_r($profile);
// Now you can redirect to another page and use the access token from $_SESSION['facebook_access_token']
} else {
// replace your website URL same as added in the developers.facebook.com/apps e.g. if you used http instead of https and you used non-www version or www version of your website then you must add the same here
$loginUrl = $helper->getLoginUrl('https://sohaibilyas.com/fbapp/', $permissions);
echo 'Log in with Facebook!';
}
In this case, although I am logged in facebook, the first time It always show me "Log in with Facebook!" and it only get the token after redirect. I don´t know it I am doing something wrong, but I would like if the user is logged in Facebook it is not necessary to click in Log in.
Edit, resolves
After writing, I realized that I just needed to do header("location: ".$loginUrl); to avoid click in the link.