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

Easy fix for me. I changed:

$loginUrl = $helper->getLoginUrl('http://www.MYWEBSITE.ca/index_callback.php', $permissions);

to:

$loginUrl = $helper->getLoginUrl('http://MYWEBSITE.ca/index_callback.php', $permissions);

removing the 'www' solved the problem.