无法在Facebook中创建webhooks

Question

最近我为facebook webhooks购买了SSL。 在我的本地工作正常但在实时服务器我无法创建webhooks。

Image which i am getting error

请帮助。

  if (isset($_REQUEST['hub_challenge'])) {

    $challenge = $_REQUEST['hub_challenge'];

    $verify_token = $_REQUEST['hub_verify_token'];


    if ($verify_token === 'a5539a3a27d0d8519ddce158987ffb65') {

        echo $challenge;

    }   

    die();

}

Answer 1

define('VERIFY_TOKEN', 'abc');                                    
$method = $_SERVER['REQUEST_METHOD'];                             

if ($method == 'GET' && $_GET['hub_mode'] == 'subscribe' &&       
    $_GET['hub_verify_token'] == VERIFY_TOKEN) {
  echo $_GET['hub_challenge'];
}