<?php require_once __DIR__ . '/../vendor/autoload.php'; $dotenv = new Dotenv\Dotenv(__DIR__."/../"); $dotenv->load(); $client = new Berkayk\OneSignal\OneSignalClient( getenv('APP_ID'), getenv('REST_API_KEY'), getenv('USER_AUTH_KEY')); echo $client->testCredentials(); $client->sendNotificationToUser(".","4bc5da02-1722-4fee-943d-c8b5ccd507a2");