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:

 
 final class DemoFile
 {
-    public $a = 1;
+    public int $a = 1;
 }

PHP snippet to change

<?php

final class DemoFile
{
    public $a = 1;
}

Applied Rules:

TypedPropertyFromAssignsRector

Not a change you expect?

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

Config rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\Property\TypedPropertyFromAssignsRector;
use Rector\ValueObject\PhpVersion;

return RectorConfig::configure()
    ->withPreparedSets(typeDeclarations: true)
    ->withConfiguredRule(TypedPropertyFromAssignsRector::class, ['inline_public' => true]);

Rector version: 3fe355 - released at 2025-12-25 23:58