我目前正在开发一个安卓项目。所以我使用Google云消息传递来实现推送通知，并且我需要将另一个应用添加到gcm中，因此我需要google-services.json文件来实现gcm服务，但是现在谷歌说我必须先在Firebase上注册并迁移，然后才能获取google-services.json文件。我不想使用Firebase的原因是我必须根据Firebase修改所有网络服务。有其他方法可以做到这一点吗？
我有很多类似这样的方法。
public function send_message($gcm_id,$details){
$reg_token = array($gcm_id);
$msg =array("message"=>$details);
//Creating a new array fileds and adding the msg array and registration token array here
$fields = array
(
'registration_ids' => $reg_token,
'data' => $msg
);
//Adding the api key in one more array header
$headers = array
(
'Authorization: key= MY_API_KEY',
'Content-Type: application/json'
);
//Using curl to perform http request
$ch = curl_init();
curl_setopt( $ch,CURLOPT_URL, 'https://android.googleapis.com/gcm/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 ) );
//Getting the result
$result = curl_exec($ch );
curl_close( $ch );
//Decoding json from result
$res = json_decode($result);
//Getting value from success
$flag = $res->success;
//if success is 1 means message is sent \
$response = array("error" => FALSE);
if($flag == 1){
//Redirecting back to our form with a request success
$response["error"] = false;
$response["error_msg"] = "Message SuccessFully Sent Check Your Device";
echo json_encode($response);
}else{
//Redirecting back to our form with a request failure
$response["error"] = TRUE;
$response["error_msg"] = "Eror Occured";
echo json_encode($response);
}
}