DirnameDirConcatStringToDirectStringPathRector

Find another rule

Change dirname() and string concat, to __DIR__ and direct string path

 class SomeClass
 {
     public function run()
     {
-        $path = dirname(__DIR__) . '/vendor/autoload.php';
+        $path = __DIR__ . '/../vendor/autoload.php';
     }
 }

Configure your rector.php:

<?php

use Rector\CodeQuality\Rector\Concat\DirnameDirConcatStringToDirectStringPathRector;
use Rector\Config\RectorConfig;

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