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:

     
 class DemoFile
 {
-    public function my(stdClass $class)
+    public function my(FooBarClass $class)
     {
         return 9;
     }

         return 10;
     }
 
-    private function bar(FooBar $class)
+    private function bar(FooBarClass $class)
     {
         return 11;
     }
 }

PHP snippet to change

<?php

namespace App;

use stdClass;
use stdClass as FooBarClass;
use stdClass as FooBar;
    
class DemoFile
{
    public function my(stdClass $class)
    {
        return 9;
    }
    
    public function foo(FooBarClass $class)
    {
        return 10;
    }

    private function bar(FooBar $class)
    {
        return 11;
    }
}

Config rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\Renaming\Rector\Name\RenameClassRector;
use Rector\TypeDeclaration\Rector\Property\TypedPropertyFromAssignsRector;

return RectorConfig::configure()
    ->withImportNames(importShortClasses: false)
    ->withRules([
        TypedPropertyFromAssignsRector::class
    ]);

Rector version: 83a4a1 - released at 2026-04-04 14:48