Try Rector Online | Rector - Automated Way to Instantly Upgrade and Refactor any PHP code

Rector run Failed:

{ "totals": { "changed_files": 0, "errors": 1 }, "errors": [ { "message": "System error: \"PHPStan\\Analyser\\Fiber\\FiberNodeScopeResolver::callNodeCallback(): Argument #2 ($node) must be of type PhpParser\\Node, null given, called in phar:///var/www/vendor/phpstan/phpstan/phpstan.phar/src/Analyser/NodeScopeResolver.php on line 2639\"\nRun Rector with \"--debug\" option and post the report here: https://github.com/rectorphp/rector/issues/new", "file": "/var/www/storage/demo/qnbcqwal8wbysr3zm511/rector_analyzed_file.php", "line": 24 } ] }

Run Rector on your code to see what it can do for you:

PHP snippet to change

<?php

    function modify_shipping_rate_cost($cost, $rate) {
       list(, $instance_id) = explode(':', $rate->id);
    }

Config rector.php

<?php

declare(strict_types=1);

use Rector\Config\RectorConfig;
use Rector\Php71\Rector\List_\ListToArrayDestructRector;

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

Rector version: 036cfd - released at 2026-02-24 16:36