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:

 {
     public function run(bool $param)
     {
-        $this->process(b: 1, a: 2);
+        $this->process(b: 1);
     }
 
     private function process($a, $b)

PHP snippet to change

<?php

final class DemoFile
{
    public function run(bool $param)
    {
        $this->process(b: 1, a: 2);
    }

    private function process($a, $b)
    {
    }
}

Applied Rules:

RemoveMethodCallParamRector

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\Arguments\Rector\MethodCall\RemoveMethodCallParamRector;
use Rector\Arguments\ValueObject\RemoveMethodCallParam;
use Rector\Config\RectorConfig;

return RectorConfig::configure()
    ->withConfiguredRule(RemoveMethodCallParamRector::class, [
        new RemoveMethodCallParam('DemoFile', 'process', 1),
    ]);

Rector version: 13f7ab - released at 2026-01-07 13:19