php yar

PHP Yar (Yet Another RPC) is a PHP extension and protocol that allows for easy communication between PHP and other programming languages or systems. It provides a way to call remote PHP methods or functions as if they were local, making it useful for building distributed applications or microservices.

Yar uses a lightweight binary protocol for data serialization and transmission, which makes it more efficient compared to other RPC protocols. It supports both synchronous and asynchronous communication, allowing for better performance and scalability.

To use Yar, you need to install the Yar extension for PHP and configure your server and client applications accordingly. The server application exposes PHP methods or functions that can be called remotely, while the client application makes requests to the server and receives the results.

Here's a simple example of using Yar:

Server side:

<?php
class Calculator {
    public function add($a, $b) {
        return $a + $b;
    }
}

$server = new Yar_Server(new Calculator());
$server->handle();
?>

Client side:

<?php
$client = new Yar_Client("http://example.com/server.php");
$result = $client->add(5, 3);
echo $result; // Output: 8
?>

In this example, the server exposes a Calculator class with an add method. The client creates a Yar client instance and calls the add method remotely, getting the result back.

Yar provides additional features like error handling, custom data serialization, and support for different transport protocols. It is a useful tool for building distributed PHP applications and integrating with other systems.