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

Rector run Failed:

{ "totals": { "changed_files": 0, "errors": 1 }, "errors": [ { "message": "System error: \"Name cannot be empty\"\nRun Rector with \"--debug\" option and post the report here: https://github.com/rectorphp/rector/issues/new", "file": "/var/www/storage/demo/zhwjh0ukhc6khakah90v/rector_analyzed_file.php", "line": 243 } ] }

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

PHP snippet to change

<?php

#[Attribute]
class Some
{
}

/**
 * @Some(foo="")
 */
class WithEmptyString
{
}

Config rector.php

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Php80\Rector\Class_\AnnotationToAttributeRector;
use Rector\Php80\ValueObject\AnnotationToAttribute;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->ruleWithConfiguration(AnnotationToAttributeRector::class, [
        new AnnotationToAttribute('Some', null, ['foo']),
    ]);
};

Rector version: 5b90a0 - released at 2026-01-30 23:38