如何使用PHP在cordova应用程序中实现推送通知？

我已经编写了此代码来实现推送通知。但是我遇到了错误。我不知道我在哪里做错。

// API access key from Google API's Console
define( 'API_ACCESS_KEY', 'AAAADp9idX0:APA91bGHN3PP5GKS3OnVdRQgyNgx-bvAvIoR86B0e_NcZ6XP7QvLNoMiTtO54pB1PbtA3tQo5xuxmfIXD9E40oBnkXcZs9OZKSHXFASO0aH8dv7RozYuvjQXL7rguyHmuIdhOCbg' );

$registrationIds = array('62803502086');

//$registrationIds = '62803572093';
// prep the bundle
$msg = array
(
    'message'   => 'here is a message. message',
    'title'     => 'This is a title. title',
    'subtitle'  => 'This is a subtitle. subtitle',
    'tickerText'    => 'Ticker text here...Ticker text here...Ticker text here',
    'vibrate'   => 1,
    'sound'     => 1,
    'largeIcon' => 'large_icon',
    'smallIcon' => 'small_icon'
);

$fields = array
(
    'registration_ids'  => $registrationIds,
    'data'          => $msg
);

$headers = array
(
    'Authorization: key=' . API_ACCESS_KEY,
    'Content-Type: application/json'
);

$ch = curl_init();
curl_setopt( $ch,CURLOPT_URL, 'https://fcm.googleapis.com/fcm/send' );
curl_setopt( $ch,CURLOPT_POST, true );
curl_setopt( $ch,CURLOPT_HTTPHEADER, $headers );
curl_setopt( $ch,CURLOPT_RETURNTRANSFER, true );
curl_setopt( $ch,CURLOPT_SSL_VERIFYPEER, false );
curl_setopt( $ch,CURLOPT_POSTFIELDS, json_encode( $fields ) );
$result = curl_exec($ch );
curl_close( $ch );

echo $result;
?>

在浏览器屏幕中出现此错误-

{“ multicast_id”：2810501046743574091，“成功”：0，“失败”：1，“ canonical_ids”：0，“结果”：[{“错误”：“ InvalidRegistration”}]}