ClassOnObjectRector

Find another rule

Change get_class($object) to faster $object::class

 class SomeClass
 {
     public function run($object)
     {
-        return get_class($object);
+        return $object::class;
     }
 }

Configure your rector.php:

<?php

use Rector\Config\RectorConfig;
use Rector\Php80\Rector\FuncCall\ClassOnObjectRector;

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

SETS: PHP 8.0