Try Rector Online | Rector - Automated Way to Instantly Upgrade and Refactor any PHP code

Run Rector on your code to see what it can do for you:

// no change

PHP snippet to change

<?php

use App\Service\DocumentService;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;

class ExampleController extends AbstractController
{
	public function example(DocumentService $documentService): void
	{
		$documentService->someMethod();
	}
}

Config rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\Symfony\CodeQuality\Rector\Class_\ControllerMethodInjectionToConstructorRector;
use Rector\ValueObject\PhpVersion;

return RectorConfig::configure()
	->withRules([
		ControllerMethodInjectionToConstructorRector::class,
	])
    // demonstrate specific PHP version
    ->withPhpVersion(PhpVersion::PHP_81);

Rector version: 0ff467 - released at 2026-07-05 23:08