Firebase Admin SDK for PHPの使い方メモ

use Kreait\Firebase\Contract\Messaging;
use Kreait\Firebase\Messaging\CloudMessage;

class MyService
{
    public function __construct(Messaging $messaging)
    {
        $this->messaging = $messaging;
    }

    // 一つのデバイスに送信する
    public function sentToOneDevice()
    {
      $notification = [
        'title' => 'タイトルです',
        'body' => 'ボディです',
      ];
      $data = [
        '何らかのkey' => '何らかのvalue'
      ];
      $deviceToken = 'xxxxxxxxxxx';
      $message = CloudMessage::withTarget('token', $deviceToken)
          ->withNotification($notification)
          ->withData($data)

      $this->messaging->send($message);
    }

    // 複数のデバイスに送信する
    public function sendToMultiDevices()
    {
      $notification = [
        'title' => 'タイトルです',
        'body' => 'ボディです',
      ];
      $message = CloudMessage::new()->withNotification($notification);
      $deviceTokens = [
        'xxxxxxxx',
        'yyyyyyyy',
      ];
      $this->messaging->sendMulticast($message, $deviceTokens);
    }

    // デバイストークンをトピックに登録する
    public function subscribeToTopic()
    {
      $topic = 'news';
      $deviceToken = 'xxxxxxxxxxx';
      $this->messaging->subscribeToTopic($topic, $deviceToken);
    }

    // トピックを使って送信する
    public function sendToTopic()
    {
      $topic = 'news';
      $notification = [
        'title' => 'タイトルです',
        'body' => 'ボディです',
      ];
      $message = CloudMessage::withTarget('topic', $topic)
          ->withNotification($notification);
      $this->messaging->send($message);
    }
}

Messaging.messaging().subscribe(toTopic: "weather") { error in
  print("Subscribed to weather topic")
}

Firebase.messaging.subscribeToTopic("weather")
    .addOnCompleteListener { task ->
        var msg = "Subscribed"
        if (!task.isSuccessful) {
            msg = "Subscribe failed"
        }
        Log.d(TAG, msg)
        Toast.makeText(baseContext, msg, Toast.LENGTH_SHORT).show()
    }

await FirebaseMessaging.instance.subscribeToTopic("topic");

// These registration tokens come from the client FCM SDKs.
const registrationTokens = [
  'YOUR_REGISTRATION_TOKEN_1',
  // ...
  'YOUR_REGISTRATION_TOKEN_n'
];

// Subscribe the devices corresponding to the registration tokens to the
// topic.
getMessaging().subscribeToTopic(registrationTokens, topic)
  .then((response) => {
    // See the MessagingTopicManagementResponse reference documentation
    // for the contents of response.
    console.log('Successfully subscribed to topic:', response);
  })
  .catch((error) => {
    console.log('Error subscribing to topic:', error);
  });