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 FooImpl implements Foo
 {
-    public ?string $bar {
+    public ?string $bar = null {
         get => 'bar';
     }
 }

PHP snippet to change

<?php

declare(strict_types=1);


interface Foo
{
    public ?string $bar { get; }
}

final class FooImpl implements Foo
{
    public ?string $bar {
        get => 'bar';
    }
}

Applied Rules:

RestoreDefaultNullToNullableTypePropertyRector

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\Php74\Rector\Property\RestoreDefaultNullToNullableTypePropertyRector;

return RectorConfig::configure()
    ->withRules([
        RestoreDefaultNullToNullableTypePropertyRector::class
    ]);

Rector version: e65ac6 - released at 2026-02-05 16:20