rector.php

<?php
use Rector\Core\Configuration\Option;
use Rector\Core\ValueObject\PhpVersion;
use Rector\Doctrine\Set\DoctrineSetList;
use Rector\Nette\Set\NetteSetList;
use Rector\Set\ValueObject\SetList;
use Rector\Symfony\Set\SensiolabsSetList;
use Rector\Symfony\Set\SymfonySetList;
use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;

return static function (ContainerConfigurator $containerConfigurator): void {
    $parameters = $containerConfigurator->parameters();

    // paths to refactor; solid alternative to CLI arguments
    $parameters->set(Option::PATHS, [__DIR__ . '/src', __DIR__ . '/tests']);

    // is your PHP version different from the one your refactor to? [default: your PHP version], uses PHP_VERSION_ID format
    $parameters->set(Option::PHP_VERSION_FEATURES, PhpVersion::PHP_81);

    $parameters = $containerConfigurator->parameters();
    $parameters->set(
        Option::SYMFONY_CONTAINER_XML_PATH_PARAMETER,
        __DIR__ . '/var/cache/dev/App_KernelDevDebugContainer.xml'
    );
    // endregion

    $containerConfigurator->import(SymfonySetList::SYMFONY_60);
    $containerConfigurator->import(SymfonySetList::SYMFONY_CODE_QUALITY);
    $containerConfigurator->import(SymfonySetList::SYMFONY_CONSTRUCTOR_INJECTION);
    $containerConfigurator->import(SymfonySetList::ANNOTATIONS_TO_ATTRIBUTES);
    $containerConfigurator->import(DoctrineSetList::ANNOTATIONS_TO_ATTRIBUTES);
    $containerConfigurator->import(SensiolabsSetList::FRAMEWORK_EXTRA_61);
    $containerConfigurator->import(SetList::PHP_80);
    $containerConfigurator->import(SetList::PHP_81);
};