如果添加了childed MySQL，如何收到警报

Question

I'm building a PHP application that uses a MySQL database. However, this database is shared between many devices like iPhones using an app built with swift that also connects to the same database and the same principle applies to android apps. So I would like to know how to alert all devices connected to the database that a new entry was made so they can all update their tables, this entry can be done by any of the connected devices. Basically the same thing the Firebase does with the on_child_added. I used to use Firebase and it worked fine, but the web application was made using Java Script and now I need to use PHP, as it turns out using Firebase and PHP is a pain even with Firebase admin SDK for PHP, so I need to make this change. Any resources are appreciated, thank you.