如何将FCM推送通知发送到多个主题 [英] How to send FCM Push Notifications to multiple topics

问题描述

我正在使用PHP服务器发送FCM推送通知。我想知道如何将推送通知同时发送到多个主题。

这是我的代码。

 函数sendPush（$ topic，$ msg）{
 $ API_ACCESS_KEY ='...'; 
 $ msg =数组
（
'msg'=> $ msg 
）; 
 
 $ fields = array（'to'=>'/ topics /'。$ topic，'priority'=>'high'，'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））; 
 $ pushResult = curl_exec（$ ch）; 
 curl_close（$ ch）; 
 
  

解决方案

$ b $
condition：'dogs'in topics ||'cats'in topics，
priority：high，
通知：{
body：这是Firebase云消息传递主题消息！，
title：FCM消息，
}
}

这会将消息发送到订阅主题狗或猫的设备。 b
$ b

来自 FCM文档的相关引用
$ b

要发送到多个主题的组合，应用服务器将条件关键字设置为指定目标主题的布尔条件。

请注意，您仅限于2个布尔条件，这意味着您最多可以发送3个主题的消息。 >

I am using php server to send FCM push notifications. I want to know how I can send push notifications to multiple topics at the same time.

Here is my code.

function sendPush($topic,$msg){
$API_ACCESS_KEY = '...';
$msg = array
(
    'msg' => $msg
);

$fields = array('to' => '/topics/' . $topic, 'priority' => 'high', '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));
$pushResult = curl_exec($ch);
curl_close($ch);
}

解决方案

You use the condition key to send to multiple topics.

For example:

{
  "condition": "'dogs' in topics || 'cats' in topics",
  "priority" : "high",
  "notification" : {
    "body" : "This is a Firebase Cloud Messaging Topic Message!",
    "title" : "FCM Message",
  }
}

This would send the message to devices subscribed to topics "dogs" or "cats".

Relevant quote from FCM docs:

To send to combinations of multiple topics, the app server sets the condition key to a boolean condition that specifies the target topics.

Note that you are limited to 2 boolean conditions, which means you can send a single message to at most 3 topics.

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