PHP Server Code for Firebase Notification

The notification.php file helps you send notifications to your Firebase clients (Android, Web or iOS) via Firebase HTTPV1 API.

Pre-requisite

1. To use this code, you need Google Auth Library for PHP to authenticate your notification requests.
2. Follow this link to install it on your server.

How to use

1. To send notification via Firebase, you need a private key file for your service account. You can get it by following this link.
2. Once you got service json file, Upload it on your server at some safe path not accessible to public user preferrably in the root directory of your server and rename it to server.json.
3. Edit notification.php and replace <user_dir> with your root directory path.
4. Now in your main PHP code, include notification.php, initialize Notification object with your Firebase project id (Which you can get on the Firebase console) and call sendToTopic method with topic,title and body as arguments. sendToTopic will return true if everything succeeds else it will return false.