Removes (unset) cast
-$different = (unset) $value;
+$different = null;
-$value = (unset) $value;
+unset($value);Configure your rector.php:
<?php
use Rector\Config\RectorConfig;
use Rector\Php72\Rector\Unset_\UnsetCastRector;
return RectorConfig::configure()
->withRules([
UnsetCastRector::class,
]);