Simple logger for requests

index.php

<?php

declare(strict_types=1);

/*
    Usage:
       start PHP devel server in this script's directory:
       php -S [::]:8888
       send requests to http://your-ip-address:8888/
       JSON events are logged to event.log
       JSON request bodies are logged to timestamped files
*/

$entityBody = file_get_contents('php://input');
$data = [
    'b' => $entityBody,
    'g' => $_GET,
    'p' => $_POST,
    's' => $_SERVER
];

$dump = var_export($data, true);

file_put_contents(__DIR__.'/'.time().'.json', json_encode($data),FILE_APPEND);
if ($entityBody) {
    file_put_contents(__DIR__.'/'.time().'-body.json', $entityBody, FILE_APPEND); // we expect application/json here
    $json = @json_decode($entityBody, true);
    if (!empty($json)) {
        $log = date('Y-m-d H:i:s') . ' - ' . $_SERVER['HTTP_HOST'] . '  ' . $json['entity']
            . ' '  . $json['eventName'] . ' ' . $json['entityId'] . ' ' . $json['changeType']
            . ' uuid: ' . $json['uuid'] ."\n";
        @file_put_contents(__DIR__.'/event.log', $log, FILE_APPEND);
    }
}
@file_put_contents(__DIR__.'/log.html', $dump, FILE_APPEND);

echo $dump;