Friends, I have a problem that is spinning around me. I am learning to use the Facebook API, I have 24 hours with this and I am already understanding how it works, I feel a little sorry because in reality it is easy the problem is that I do not understand much English so it is difficult for me.
The specific question is: How do I automatically publish in the selected groups and pages when I log in with Facebook? For example, of the following groups that I manage, I only select one.
The problem is that when the group is posted, the group id is necessary, using this code snippet.
$response = $this->fb->post('/123456789/feed', $linkData, $accessToken);
So? The specific question, How do I get that list of groups (and also for the pages) to which I granted permission to be able to (it occurs to me), go through an array and do the post automatically.
Right now I am clear about the following points:
1.- I need to create an app: https://developers.facebook.com/
2.- Have the Facebook SDk installed: https://github.com/facebook/php-graph-sdk
3.- My class has saved these permissions and this configuration:
require_once "/../vendor/autoload.php";
class facebookController{
private $appid ='XXXXX';
private $appsecret='XXXXXXXXXXXXXXXXXXXXXXXXXX';
public $fb;
public $helper;
public $permisos = ['email', 'manage_pages', 'publish_pages' , 'publish_to_groups', 'user_posts', 'groups_access_member_info'];
public $callbackurl = 'http://localhost/misitio.com.mx/auth/fb-callback.php';
public $loginurl;
function __construct(){
$this->fb = new Facebook\Facebook([
'app_id' => $this->appid,
'app_secret' => $this->appsecret,
'default_graph_version' => 'v3.2',
]);
$this->helper = $this->fb->getRedirectLoginHelper();
$this->loginurl = $this->helper->getLoginUrl($this->callbackurl, $this->permisos);
}
}
4.- I must obtain the Access Token, it can be debugged here: https://developers.facebook.com/tools/explorer?method=GET&path=me%3Ffields%3Did%2Cname&version=v3.2
$this->helper = $this->fb->getRedirectLoginHelper();
try {
$accessToken = $this->helper->getAccessToken();
} catch(Facebook\Exceptions\FacebookResponseException $e) {
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;
}
5.- For some cases I need the user_id, I already have it saved:
$oAuth2Client = $this->fb->getOAuth2Client();
$tokenMetadata = $oAuth2Client->debugToken($accessToken);
$userid = $tokenMetadata->getUserId();
6.- To post for example in a group, I use the following and this is where the inconvenience is: (Based on the official documentation: https://developers.facebook.com/docs/graph-api/reference/v3. 2 / user / groups)
public function toPost($titulo, $url){
$empresa = new configuracionController();
$userid=$empresa->getFbUserId();
$accessToken = $empresa->getFBToken();
try {
// Returns a `Facebook\FacebookResponse` object
$this->fb->post('/123456789/feed', $url, $accessToken);
} catch(Facebook\Exceptions\FacebookResponseException $e) {
echo 'Graph returned an error: ' . $e->getMessage();
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
$graphNode = $response->getGraphNode();
}
From already thank you very much.
I want that my Php script (myscript.php ) that i have deployed on a public host gets the Facebook user access token (with my facebook account) from Facebook. I don't want user interaction with login procedure where to inser user and pass. Is it possibile and how can be made? I understand the SDK is not useful for this scenario.
For now my script is:
require_once ('../php-graph-sdk-5.x/src/Facebook/autoload.php');
$fb = new \Facebook\Facebook([
'app_id' => 'myappid',
'app_secret' => 'mysecret',
'default_graph_version' => 'v2.10',]);
$helper = $fb->getRedirectLoginHelper();
$accessTokenEntity=$helper->getAccessToken();
try {
$accessTokenEntity=$helper->getAccessToken();
$response = $fb->get('/me', $accessTokenEntity->getValue());
}
catch (\Facebook\Exceptions\FacebookResponseException $e) {
echo 'Graph returned an error: ' . $e->getMessage();
exit;
}
catch (\Facebook\Exceptions\FacebookSDKException $e)
{
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
$me = $response->getGraphUser();
echo 'Logged in as ' . $me->getName();
Copied from gitub example but i think it s not good for my scenario.
And the output is
"Fatal error: Call to a member function getValue() on null in ..."
I recently upgraded to the latest version of the facebook SDK and I'm having issues logging users in. I generate the login link just fine, but when facebook sends the user back to my site with the token, I get this error:
fb sdk error: Cross-site request forgery validation failed. Required param "state" missing from persistent data.
I tried to do some trouble shooting. I printed out everything in the session data and everything in the GET request. I see that the GET has a state parameter and the session data has a FBRLH_state parameter. They both have the same value. So how is it telling me that the parameter is missing?
I've tried some suggestions I've seen on other questions (ie, starting the session), but nothing seems to work.
Any help would be greatly appreciated! I'm using the php-graph-sdk-5.5. My facebook connect file is below
if(!class_exists('facebook')){
class facebook{
private $db = null;
private $fb = null;
private $token = null;
private $DEV = null;
private $sdk_error = null;
private $api_error = null;
private $verbose = false;
private $graph_user = null;
private $db_helper = null;
private $errors = null;
public function __construct($db,
$fb_id = FB_APP_ID,
$fb_secret = FB_APP_SECRET,
$fb_version = FB_DEFAULT_GRAPH_VERSION){
if($this->verbose) echo '<pre>';
if($this->verbose) echo 'starting construction'.PHP_EOL;
$this->db = $db;
if(!$this->fb){
$this->log[] = 'no connect found. building..'.PHP_EOL;
$this->fb = new Facebook\Facebook(array(
'app_id' => $fb_id,
'app_secret' => $fb_secret,
'default_graph_version' => $fb_version));
if(!$this->fb){
die('facebook initialization failure');
}
$this->log[] = 'finished building new connection'.PHP_EOL;
}
}
public function get_login_url($callback_uri, $permissions = ['email','user_birthday']){
global $_DEV,$_config;
$helper = $this->fb->getRedirectLoginHelper();
$callback_host = ($_DEV ? $_config['dev_domain'] : $_config['live_domain']);
$callback_url = 'https://'.$callback_host.$callback_uri;
return $helper->getLoginUrl($callback_url, $permissions);
}
public function catch_token(){
if($this->token){
$this->log[] = 'already have token.'.PHP_EOL;
return $this->token;
} else if(!$this->fb){
$this->log[] = $this->error[] = 'no facebook connection in catch token()';
}
$this->log[] = 'starting catch token routine.'.PHP_EOL;
//$_SESSION['state']=$_GET['state'];
echo '<pre>' . var_export($_SESSION, true) . '</pre>';
echo '<BR><BR><pre>' . var_export($_GET, true) . '</pre>';
$helper = $this->fb->getRedirectLoginHelper();
$this->token = $helper->getAccessToken();
$this->log[] = 'caught token: '.$this->token;
$string_token = $this->token.PHP_EOL;
//die($string_token);
try {
$helper = $this->fb->getRedirectLoginHelper();
$this->token = $helper->getAccessToken();
$this->log[] = 'caught token: '.$this->token;
$string_token = $this->token.PHP_EOL;
return $this->user_flush();
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
$this->log[] = $this->errors[] = 'fb api error: ' . $e->getMessage();
return null;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
$this->log[] = $this->errors[] = 'fb sdk error: ' . $e->getMessage();
return null;
} catch(Exception $e){
$this->log[] = $this->errors[] = 'unknown error: '.$e->getMessage();
return null;
}
}
public function get_token(){
$this->log[] = 'get token called.'.PHP_EOL;
if($this->token){
$this->log[] = 'token found in object'.PHP_EOL;
//echo '<pre>';
//die(debug_print_backtrace());
return $this->token;
} else {
$this->log[] = $this->errors[] = 'token not found in object.'.PHP_EOL;
return null;
}
}
public function get_user($override = false){
$fields = array(
'first_name',
'last_name',
'email',
'id',
'picture',
'birthday',
'gender',);
$fields = implode(',',$fields);
if($this->graph_user === null){
if($this->fb && $this->get_token()){
try {
// Returns a Facebook\FacebookResponse object
$resp_url = '/me?fields='.$fields.'&debug=all';
$this->log[] = $resp_url;
$response = $this->fb->get($resp_url, $this->get_token());
$this->graph_user = $response->getGraphUser();
return $this->graph_user;
}
catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
$this->api_error = 'fb api error: ' . $e->getMessage();
$this->errors[] = $this->api_error;
return null;
}
catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
$this->sdk_error = 'fb sdk error: ' . $e->getMessage();
$this->errors[] = $this->sdk_error;
return null;
}
} else {
$this->sdk_error = "get_user(): fb connection or token not set. are you logged in?";
$this->errors[] = $this->sdk_error;
//echo '<pre>';
//debug_print_backtrace();
//die('token: '.$this->token);
return null;
}
} else {
$this->sdk_error = "get_user(): graph_user already set";
$this->errors[] = $this->sdk_error;
return $this->graph_user;
}
}
public function get_user_first_name(){
return $this->get_user()['first_name'];
}
public function get_user_last_name(){
return $this->get_user()['last_name'];
}
public function get_user_id(){
return $this->get_user()['id'];
}
public function get_user_email(){
return $this->get_user()['email'];
}
public function get_user_picture(){
return $this->get_user()['picture']['url'];
}
public function get_user_birthday(){
return $this->get_user()['birthday'];
}
public function user_flush(){
//this is the command function.
// runs the basic functionality of this class
// by adding this user to the database if they're not there
// and logging them in if they are.
$this->graph_user = $this->get_user();
//$this->log['graph_user_at_user_flush'] = $this->graph_user;
$this->build_user();
$this->log['GRAPH_USER'] = $this->get_user();
$this->log['user_input_array#user_flush'] = $this->user_input;
if($return = $this->user->fb_register()){
//die(print_r(debug_backtrace(),true));
//$this->log['success return'] = '. '.$return;
return $return;
} else {
//die('<pre>'.print_r(debug_backtrace(),true));
$this->log['fb_register_fail'] = array('fb_register() (also login) failed.',$this->user->get_errors());
return null;
}
}
public function build_user(){
$this->user_input['first_name'] = $this->get_user_first_name();
//$this->user_input['last_name'] = $this->get_user_last_name();
$this->user_input['facebook_id'] = $this->get_user_id();
$this->user_input['email'] = $this->get_user_email();
$this->user_input['image_url'] = $this->get_user_picture();
$this->user_input['birthday'] = $this->get_user_birthday();
if($this->verbose)
print_r($this->user_input);
$this->user = new user($this->user_input,$this->db);
}
public function logout(){
unset($_SESSION['fb_id']);
unset($this->token);
unset($this->fb);
}
public function get_errors(){
return array_unique($this->errors);
}
public function get_log(){
return array_unique($this->log);
}
}
}
//finally, create the connection.
if(!isset($fb))
$fb = new facebook($db);
This might be kinda late but I hope it helps others.
I had this problem for a while and I've searched around and have seen a lot of different solutions, many of which disable the CSRF check. So after everything I've read, this is what worked for me.
For what I understand, you get this error when your redirect URL doesn't match the one you have setup on your app settings so my issue was fixed every easily but I have also seen people have issues by not having their session started properly, so I will cover both issues.
Step 1: Ensure your session has started when it needs to.
for example: fb-config.php
session_start();
include_once 'path/to/Facebook/autoload.php';
$fb = new \Facebook\Facebook([
'app_id' => 'your_app_id',
'app_secret' => 'your_secret_app_id',
'default_graph_version' => 'v2.10'
]);
$helper = $fb->getRedirectLoginHelper();
if your facebook callback code is on another file aside from the config, then start the session on that file too.
for example: fb-callback.php
session_start();
include_once 'path/to/fb-config.php';
try {
$accessToken = $helper->getAccessToken();
} catch (\Facebook\Exceptions\FacebookResponseException $e) {
echo "Response Exception: " . $e->getMessage();
exit();
} catch (\Facebook\Exceptions\FacebookSDKException $e) {
echo "SDK Exception: " . $e->getMessage();
exit();
}
/** THE REST OF YOUR CALLBACK CODE **/
Now, what solved my actual issue.
Step 3: Set up your redirect URL in your app settings.
In your Facebook Login app settings, go to the Valid OAuth redirect URIs where you should have added the url that points to your fb-callback.php file.
http://example.com/fb-callback.php
AND ALSO
http://www.example.com/fb-callback.php
then setup your redirect url as follows.
$redirectURL = "http://".$_SERVER['SERVER_NAME']."/fb-callback.php";
$permissions = ['email'];
$fLoginURL = $helper->getLoginUrl($redirectURL, $permissions);
Why both with and without www and why use SERVER_NAME?
because your Valid OAuth redirect URI needs to match your redirect url in your code and if in you app settings you only set your OAuth redirect as http://example.com/fb-callback.php and set up your $redirectURL as http://example.com/fb-bacllback.php to make it match but the user entered your site as http://www.example.com then the user will get the Facebook SDK error: Cross-site request forgery validation failed. Required param “state” missing from persistent data because the URL the user is at, doesn't EXACTLY match what you have setup. Why? I have no freaking idea.
My approach makes it so if the user enters your site as http://example.com or http://www.example.com, it will always match what you setup in your app settings. why? because $_SERVER['SERVER_NAME'] will return the domain with or without the www depending on how the user entered the url in the browser.
This are my findings and this is about the only thing that worked for me without removing the CSRF check and so far, no issues.
I hope this helps.
fb sdk error: Cross-site request forgery validation failed. Required param "state" missing from persistent data.
It has something to do with that you are going through the routine of calling getRedirectLoginHelper and $helper->getAccessToken() twice - once "on their own", and then again inside a try-catch block (copy&paste mistake, or unfortunate debug attempt maybe?)
I'm a bit too lazy to go check the SDK source right now, but I think it deliberately unsets the state parameter inside the session after the code was exchanged for a token, as part of making the whole process more secure - so that when you call getAccessToken a second time, it fails.
If anyone still with this proglem just add a session_start() at the begining of the callback file.
Well I faced the same error today and I got my solution from tutorials point
In your callback file, just add this line and you're good to go
if (isset($_GET['state'])) {
$helper->getPersistentDataHandler()->set('state', $_GET['state']);
}
I know I'm late to the party, but I faced this error, and I don't believe my solution was covered in the above responses, so here it goes:
One reason this error may arise is if you submit the same URL login request to Facebook more than once. For example, a user may impatiently click on a login button more than once, triggering multiple submissions of the URL. In my case, the solution was to intercept all clicks after the first with a JavaScript function.
Change version to v2.10 Check graph you are using in configuration php file
// Call Facebook API
Both the things didn't work for me for v14.
Adding that small code just before $helper = $fb->getRedirectLoginHelper(); worked.
Here's the code that actually worked -
$helper->getPersistentDataHandler()->set('state', $_GET['state']);
Still got this error after clicking login..
SDK Exception: Cross-site request forgery validation failed. Required
param "state" missing from persistent data.
I'll just follow and read the previous topic and comments above. And double check URL of Valid OAuth redirect URI.
Here's what id done. Well appreciated if you can share some thoughts and correct me..
create-acc.php
///FACEBOOK SIGNUP
session_start();
include_once 'config-facebook.php';
try {
$accessToken = $helper->getAccessToken();
} catch (\Facebook\Exceptions\FacebookResponseException $e) {
echo "Response Exception: " . $e->getMessage();
exit();
} catch (\Facebook\Exceptions\FacebookSDKException $e) {
echo "SDK Exception: " . $e->getMessage();
exit();
}
$redirectURL = "http://".$_SERVER['SERVER_NAME']."/create-acc.php";
$permissions = ['email'];
$fLoginURL = $helper->getLoginUrl($redirectURL, $permissions);
$facebook_button ='
<div style="background-color:white; color:#4b5563; cursor:pointer;" class="inline-flex border-2 py-1.5 px-5 rounded text-lg border-gray-300">
<div style="margin-top:5px;">
<img style="width:25px;" src="./assets/apps/facebook-logo-2019.png"/>
</div>
<b>Sign up with Facebook</b>
</div>
';
config-facebook.php
include_once 'Facebook/autoload.php';
$fb = new \Facebook\Facebook([
'app_id' => '**************',
'app_secret' => '*************',
'default_graph_version' => 'v2.10'
]);
$helper = $fb->getRedirectLoginHelper();
I'm literally new on this programming and still learning. So if you help it really save my time and learn on provided codes.And if I tried to add some callback codes to get a data, it looks like this on my work
create-acc.php add ons callback codes
///FACEBOOK SIGNUP
session_start();
include_once 'config-facebook.php';
if (isset($accessToken))
{
if (!isset($_SESSION['facebook_access_token']))
{
//get 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']);
}
else
{
$fb->setDefaultAccessToken($_SESSION['facebook_access_token']);
}
if (isset($_GET['code']))
{
header('Location: ./');
}
try {
$fb_response = $fb->get('/me?fields=name,first_name,last_name,email');
$fb_response_picture = $fb->get('/me/picture?redirect=false&height=200');
$fb_user = $fb_response->getGraphUser();
$picture = $fb_response_picture->getGraphUser();
$_SESSION['fb_user_id'] = $fb_user->getProperty('id');
$_SESSION['fb_user_name'] = $fb_user->getProperty('name');
$_SESSION['fb_user_email'] = $fb_user->getProperty('email');
$_SESSION['fb_user_pic'] = $picture['url'];
} catch(Facebook\Exceptions\FacebookResponseException $e) {
echo 'Facebook API Error: ' . $e->getMessage();
session_destroy();
header("Location: ./");
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
echo 'Facebook SDK Error: ' . $e->getMessage();
exit;
}
}
else
{
$redirectURL = "http://".$_SERVER['SERVER_NAME']."/create-acc.php";
$permissions = ['email'];
$fLoginURL = $helper->getLoginUrl($redirectURL, $permissions);
$facebook_button ='
<div style="background-color:white; color:#4b5563; cursor:pointer;" class="inline-flex border-2 py-1.5 px-5 rounded text-lg border-gray-300">
<div style="margin-top:5px;">
<img style="width:25px;" src="./assets/apps/facebook-logo-2019.png"/>
</div>
<b>Sign up with Facebook</b>
</div>
';
}
and the config-facebook.php
session_start();
include_once 'Facebook/autoload.php';
$fb = new \Facebook\Facebook([
'app_id' => '************',
'app_secret' => '************',
'default_graph_version' => 'v2.10'
]);
$helper = $fb->getRedirectLoginHelper();
try {
if(isset($_SESSION['facebook_access_token']))
{$accessToken = $_SESSION['facebook_access_token'];}
else
{$accessToken = $helper->getAccessToken();}
} catch(FacebookResponseException $e) {
echo 'Facebook API Error: ' . $e->getMessage();
exit;
} catch(FacebookSDKException $e) {
echo 'Facebook SDK Error: ' . $e->getMessage();
exit;
}
and the result here
Fatal error: Uncaught Facebook\Exceptions\FacebookSDKException: Cross-site request forgery validation failed. Required param "state" missing from persistent data. in /www/wwwroot/fruitask.com/Facebook/Helpers/FacebookRedirectLoginHelper.php:244 Stack trace: #0 /www/wwwroot/fruitask.com/Facebook/Helpers/FacebookRedirectLoginHelper.php(221): Facebook\Helpers\FacebookRedirectLoginHelper->validateCsrf() #1 /www/wwwroot/fruitask.com/config-facebook.php(20): Facebook\Helpers\FacebookRedirectLoginHelper->getAccessToken() #2 /www/wwwroot/fruitask.com/create-acc.php(162): include_once('/www/wwwroot/fr...') #3 {main} thrown in /www/wwwroot/fruitask.com/Facebook/Helpers/FacebookRedirectLoginHelper.php on line 244
Please do share some thoughts or any alternative way I can implement Facebook login on my website using PHP. Thanks in advance
This is my controller and it's working fine.
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Welcome extends CI_Controller {
public function __construct(){
parent::__construct();
$this->load->library('session');
}
function index(){
$this->load->view("welcome_message");
}
function fblogin(){
$fb = new Facebook\Facebook([
'app_id' => '213234637467346734',
'app_secret' => '7346762476374673647',
'default_graph_version' => 'v2.8',
]);
$helper = $fb->getRedirectLoginHelper();
$permissions = ['email','user_location','user_birthday','publish_actions'];
// For more permissions like user location etc you need to send your application for review
$loginUrl = $helper->getLoginUrl('http://localhost/facebooklogin/welcome/fbcallback', $permissions);
header("location: ".$loginUrl);
}
function fbcallback(){
$fb = new Facebook\Facebook([
'app_id' => '1767865763452676',
'app_secret' => '2454f5b88ea788b407297f39400b796b',
'default_graph_version' => 'v2.5',
]);
$helper = $fb->getRedirectLoginHelper();
$this->session->set_userdata('state',$_GET['state']);
try {
$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;
}
try {
// Get the Facebook\GraphNodes\GraphUser object for the current user.
// If you provided a 'default_access_token', the '{access-token}' is optional.
$response = $fb->get('/me?fields=id,name,email,first_name,last_name,birthday,location,gender', $accessToken);
// print_r($response);
} catch(Facebook\Exceptions\FacebookResponseException $e) {
// When Graph returns an error
echo 'ERROR: Graph ' . $e->getMessage();
exit;
} catch(Facebook\Exceptions\FacebookSDKException $e) {
// When validation fails or other local issues
echo 'ERROR: validation fails ' . $e->getMessage();
exit;
}
// User Information Retrieval begins................................................
$data['me'] = $response->getGraphUser();
$data['accessToken'] =$accessToken;
$this->load->view("home",$data);
}
}
When I refresh the home page its give me this error
Facebook SDK returned an error: Cross-site request forgery validation failed. Required param "state" missing from persistent data.
Here I changed the app_id and app_secret for security reason.and i also load the session library in autload file
I have solve the problem.I just add this code in try block where i get the access token
if(!$this->session->userdata('token')){
$accessToken = $helper->getAccessToken();
$this->session->set_userdata('token',$accessToken);
}
else{
$accessToken = $this->session->userdata('token');
}
I am using FB Ads API, following steps described in documentation and created my PHP file as bellow. It gives me
Fatal error: Uncaught exception 'FacebookAds\Http\Exception\AuthorizationException' with message 'Invalid OAuth access token.' in /project/root/vendor/facebook/php-ads-sdk/src/FacebookAds/Http/Exception/RequestException.php on line 137
and
FacebookAds\Http\Exception\AuthorizationException: Invalid OAuth access token. in /project/root/vendor/facebook/php-ads-sdk/src/FacebookAds/Http/Exception/RequestException.php on line 137
My PHP code snippet is
<?php
require_once DIR . '/vendor/autoload.php';
use Facebook\Facebook;
use Facebook\Exceptions\FacebookResponseException;
use Facebook\Exceptions\FacebookSDKException;
use FacebookAds\Api;
use FacebookAds\Object\AdUser;
// Init PHP Sessions
session_start();
$fb = new Facebook([
'app_id' => 'your-app-id',
'app_secret' => 'your-app-secret',
]);
$helper = $fb->getRedirectLoginHelper();
if (!isset($_SESSION['facebook_access_token'])) {
$_SESSION['facebook_access_token'] = null;
}
if (!$_SESSION['facebook_access_token']) {
$helper = $fb->getRedirectLoginHelper();
try {
$_SESSION['facebook_access_token'] = (string) $helper->getAccessToken();
} catch (FacebookResponseException $e) {
// When Graph returns an error
echo 'Graph returned an error: ' . $e->getMessage();
exit;
} catch (FacebookSDKException $e) {
// When validation fails or other local issues
echo 'Facebook SDK returned an error: ' . $e->getMessage();
exit;
}
}
if ($_SESSION['facebook_access_token']) {
echo "You are logged in!";
$app = Api::init(
'your-app-id', // App ID
'your-app-secret', $_SESSION['facebook_access_token'] // Your user access token
);
$me = new AdUser('me');
$my_adaccount = $me->getAdAccounts()->current();
print_r($my_adaccount->getData());
} else {
$permissions = ['ads_management'];
$loginUrl = $helper->getLoginUrl('http://localhost:8888/marketing-api/', $permissions);
echo 'Log in with Facebook';
}
You should also check that the access token you have has not expired as this will also cause an authentication exception to be thrown. This access token object has the function isExpired which you can use to test this.
You can extend the access token by using Oauth2Client and calling getLongLivedAccessToken.
$long_lived_token =
$fb->getOauth2Client()->getLongLivedAccessToken($access_token);
If you want to see why the token has become invalid, you can use the Developer Debug Tool:
https://developers.facebook.com/tools/debug/