rector/config/set/level/up-to-php54.php

<?php

declare (strict_types=1);
namespace RectorPrefix20220205;

use Rector\Core\Configuration\Option;
use Rector\Core\ValueObject\PhpVersion;
use Rector\Set\ValueObject\SetList;
use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
return static function (\Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator $containerConfigurator) : void {
    $containerConfigurator->import(\Rector\Set\ValueObject\SetList::PHP_54);
    $containerConfigurator->import(\Rector\Set\ValueObject\SetList::PHP_53);
    // parameter must be defined after import, to override impored param version
    $parameters = $containerConfigurator->parameters();
    $parameters->set(\Rector\Core\Configuration\Option::PHP_VERSION_FEATURES, \Rector\Core\ValueObject\PhpVersion::PHP_54);
};