GCM 中的注册错误无效

我收到以下错误，我正在尝试将PHP中的Google云消息传递集成到Android，任何解决方案

{"multicast_id":5864514048533725299,"success":0,"failure":1,"canonical_ids":0,"results":[{"error":"InvalidRegistration" }]}

PHP代码

<?php
if (isset($_GET["regId"]) && isset($_GET["receiver_id"]) && isset($_GET["sender_id"])) {
    $regId = $_GET["regId"];
    $receiver_id = $_GET["receiver_id"];
    $sender_id = $_GET["sender_id"];
    include_once './db_functions.php';
    include_once './GCM.php';
    $db = new DB_Functions();
    $gcm = new GCM();
//echo $sender_id. $receiver_id; exit;
    $res = $db->storeUser($sender_id, $receiver_id);
    $registatoin_ids = array($regId);
    $message = array("message" => 'You have friend request');
    $result = $gcm->send_notification($registatoin_ids, $sender_id, $receiver_id, $message);
    echo $result;
}
?>