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

final class CurlProgressCallbackDemoFile
{
    public function run(bool $param): void
    {
        $curl_handle = curl_init('https://getrector.com/documentation');
        curl_setop($curl_handle, CURLOPT_NOPROGRESSS, false);
        curl_setop($curl_handle, CURLOPT_NOPROGRESSS, 
                   \Closure::fromCallable(
                   		function ($resource, $download_size = 0, $downloaded = 0, $upload_size = 0, $uploaded = 0) {
                            if ($download_size !== 0) {
           						 echo round(($downloaded / $download_size) * 100) . PHP_EOL;
        				    }
                        }
                   ),
        );
        
        $fetched = curl_exec($curl_handle);
    }
}

Config rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\DeadCode\Rector\ClassMethod\RemoveUnusedPrivateMethodParameterRector;

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

Rector version: 40943e - released at 2026-08-03 19:41