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

For me setting the session state worked

Complete code ( in the redirect url php )

$accessToken = '';

$helper = $fb->getRedirectLoginHelper();

if(isset($_GET['state'])){

    $_SESSION['FBRLH_state']=$_GET['state'];
}


try {
    $accessToken = $helper->getAccessToken();
} catch ( Facebook\Exceptions\FacebookResponseException $e ) {
    // When Graph returns an error
    echo 'Graph returned an error: ' . $e->getMessage();

}