How to pass server-side changing php variable values ​​to a website page without reloading the page?

Question

PHP

The server has a pho script that receives the temperature from the sensor.
How can you implement the transfer of value changes to the page of the web interface without reloading the page itself, as well as with minimal consumption of connection traffic, and the maximum speed of change.

Answer 1

A websocket daemon that only sends temperature changes.

Answer 2

definitely sockets

Answer 3

Ajax on a timer? Sockets?

Answer 4

the easiest way is through https://pusher.com/ in your case, especially since the sender can wait until the event is triggered. for human users would need a queue