$body = file_get_contents('php://input'); $signature = $_SERVER['HTTP_X_YOHELP_SIGNATURE'] ?? '';

if (!$receiver->validateSignature($signature, $body)) { http_response_code(403); echo 'Invalid signature'; exit; }

$payload = json_decode($body, true); $db = new Db($config['DB_PATH']); $db->insertInbound($payload); http_response_code(200); echo json_encode(['status'=>'ok']); ?>