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
 
-$a = 1 * (2 + 3) * 4;
+$a = 2 + 3 * 4;

PHP snippet to change

<?php

$a = 1 * (2 + 3) * 4;

Applied Rules:

RemoveDeadZeroAndOneOperationRector

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\DeadCode\Rector\Plus\RemoveDeadZeroAndOneOperationRector;
use Rector\ValueObject\PhpVersion;

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

Rector version: b09565 - released at 2026-05-25 06:37