elk_example.php

<?php

include __DIR__ . "/vendor/autoload.php";

use Elastica\Client;
use Monolog\Formatter\LogstashFormatter;
use Monolog\Handler\ElasticSearchHandler;
use Monolog\Logger;

$logger = new Logger("MyApp");

$client = new Client([
    'host' => 'localhost',
    'port' => 9200,
]);

$handler = new ElasticSearchHandler($client);

$logger->pushHandler($handler);

$logger->info("Running the app");

$n = rand(0, 10);

if ($n > 9) {
    $logger->error("This is an error!!!");
} else {
    $logger->warn("Something happened");
}

$logger->info("Finished running the app");