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:

// no change

PHP snippet to change

<?php

class A
{
    public function get() : int
    {
        return 1;
    }
}

class B
{
    public function get() : int
    {
        return 2;
    }
}

class C
{
    public function get() : int
    {
        return 3;
    }
}

// Remove annotation to make it work
/** @var null|A|B */
$first = null;

if (rand(1, 10) < 3)
{
    $first = new A();
}
elseif (rand(1, 10) < 6)
{
    $first = new B();
}

$second = new C();

if ($first)
{
	var_dump($first->get() == $second->get());
}

Config rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\CodeQuality\Rector\Equal\UseIdenticalOverEqualWithSameTypeRector;

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

Rector version: b1899f - released at 2026-04-02 18:19