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:

 <?php
 
-use Json;
-
-
 class Json {
 }
 
-var_dump(JSON::class);
+var_dump(JSON::class);

PHP snippet to change

<?php

use Json;


class Json {
}

var_dump(JSON::class);

Config rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\TypeDeclaration\Rector\Property\TypedPropertyFromAssignsRector;


return RectorConfig::configure()
    ->withRules([
        TypedPropertyFromAssignsRector::class,
    ])
    ->withImportNames(removeUnusedImports: true);

Rector version: 099d0b - released at 2025-03-25 12:47