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:

 <?php
 
-final class DemoFile implements Stringable
-{
+final class DemoFile
+{
     public function __toString()
     {
     	return 'tes';
-    }
+    }
 }

PHP snippet to change

<?php

final class DemoFile implements Stringable
{
    public function __toString()
    {
    	return 'tes';
    }
}

Applied Rules:

RemoveInterfacesRector

Not a change you expect?

Create an issue on GitHub
...or to speed up fix – add a test fixture

Config rector.php

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Set\ValueObject\DowngradeLevelSetList;

return RectorConfig::configure()
    ->withSets([DowngradeLevelSetList::DOWN_TO_PHP_72]);

Rector version: fe687b - released at 2025-06-30 16:06