Magento 2 POC File

m2-poc-file.php

<?php

require __DIR__ . '/app/bootstrap.php';

use Magento\Framework\App\Bootstrap;
use Magento\Framework\App\State;
use Magento\Framework\Registry;

$bootstrap = Bootstrap::create(BP, $_SERVER);
$objectManager = $bootstrap->getObjectManager();

$execute = function (array $nsList, callable $callable) use ($objectManager) {
    $objects = array_map(fn($ns) => $objectManager->get($ns), $nsList);
    $callable(...$objects);
};

$execute([
   State::class,
   Registy::class
], function($state, $registry){
    // your code here...
})