circuit.php

<?php

use Resiliency\MainCircuitBreaker;
use Resiliency\Systems\MainSystem;
use Resiliency\Storages\SimpleArray;
use Resiliency\Clients\SymfonyClient;
use Symfony\Component\HttpClient\HttpClient;

$client = new SymfonyClient(HttpClient::create());

$mainSystem = MainSystem::createFromArray([
    'failures' => 2,
    'timeout' => 100,
    'stripped_timeout' => 200,
    'threshold' => 10000,
], $client);

$storage = new SimpleArray();

// Any PSR-14 Event Dispatcher implementation.
$dispatcher = new Symfony\Component\EventDispatcher\EventDispatcher;

$circuitBreaker = new MainCircuitBreaker(
    $mainSystem,
    $storage,
    $dispatcher
);

use_case.php

<?php

/**
 * @var Service $service
 */
$fallbackResponse = function ($service) {
    return '{}';
};

$circuitBreaker->call(
    'https://some-api.domain.com',
    $fallbackResponse,
    [
        'query' => [
            '_token' => '123456789',
        ]
    ]
);