Facebook SDK returned an error: Cross-site request forgery validation failed. The “state” param from the URL and session do not match

Question

i\'m trying to get Facebook user id using the php sdk like this

$fb = new Facebook\\Facebook([
    \'app_id\' => \'11111111111\',
    \'app_secret\' =>         


        

Answer 1

Lots of great answers already mentioned, here is the one which helped for me,

I found that the problem is Cross-site request forgery validation failed. Required param “state” missing in FB code and here is the solution

After this line

$helper = $fb->getRedirectLoginHelper();

Add the below code,

if (isset($_GET['state'])) {
    $helper->getPersistentDataHandler()->set('state', $_GET['state']);
}