IsmailShurrab

<?php
    $url = "https://fcm.googleapis.com/fcm/send";
    $token = "your device token";
    $serverKey = 'your server token of FCM project';
    $title = "Notification title";
    $body = "Hello I am from Your php server";
    $notification = array('title' =>$title , 'text' => $body, 'sound' => 'default', 'badge' => '1');
    $arrayToSend = array('to' => $token, 'notification' => $notification,'priority'=>'high');
    $json = json_encode($arrayToSend);
    $headers = array();

kuatroestrellas

/**
 * Bot para whatsapp
 * web: https://kuatroestrellas.github.io/blog/
 * responde al hola mundo con un mensaje
 * requiere nodejs v12 o superior y las librerias qrcode-terminal y whatsapp-web.js
 * npm i qrcode-terminal whatsapp-web.js
**/

const qrcode = require('qrcode-terminal');