Login to Facebook - PHP

Question

Colleagues, I am trying to enter the Facebook LOGIN option in my test application (Local Host), but is displaying the following error:

My settings are as follows:

and

I’ve made several changes and so far nothing. Watching some videos on Youtube, lets understand that as most of them have been a while are outdated, so your settings are not the same.

Below is the link with the files I’m using: https://drive.google.com/drive/folders/1lpQy3bzPsGlZa9Ka0FOnsnrzT46gYewa

OBS.: I removed my 'app_id' and 'app_secret' just to be sharing my file, but the current one is filled correctly.

Could someone please help me?

Answer 1

As I said in the comments of the question, you must utilise the same url (literally) of configuration Valid Oauth redirect uris when calling the method getLoginUrl

• If you use https at one URL, you should use at the other;
• If you nay use www in a URL, you nay should use in the other;
• If you use a file facebook-callback.php in one url, you must use in the other;
• Do not use similar URL, use the same.

If you use https://epcriacao.com/fb-callback.php in the method getLoginUrl, you must use https://epcriacao.com/fb-callback.php in configuration URIs de redirecionamento do OAuth válidos

If you put a character more or less, will give error.

PHP:

session_start();

require "vendor/autoload.php";

$fb = new Facebook\Facebook([
  'app_id' => 'APP_ID',
  'app_secret' => 'APP_SECRET',
  'default_graph_version' => 'v2.2',
]);

$helper = $fb->getRedirectLoginHelper();

echo $helper->getLoginUrl("https://www.meu-site-de-exemplo.com/facebook-callback.php", ["email"]);

Setup:

URL Generated:

https://www.facebook.com/v2.2/dialog/oauth?client_id=<CLIENT_ID>&state=<STATE>&response_type=code&sdk=php-sdk-5.6.1&redirect_uri=https%3A%2F%2Fwww.meu-site-de-exemplo.com%2Ffacebook-callback.php&scope=email

Generated URL Result:

facebook-callback.php

session_start();

require "vendor/autoload.php";

$fb = new Facebook\Facebook([
  'app_id' => 'APP_ID',
  'app_secret' => 'APP_SECRET',
  'default_graph_version' => 'v2.2',
]);

$helper = $fb->getRedirectLoginHelper();

try {
  $accessToken = $helper->getAccessToken();
} 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;
}

Capturing the User Data:

$me = $fb->get("/me?fields=id,name,email", $accessToken);
$user = $me->getGraphUser();
echo $user["email"];