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: \"Rector\\DeadCode\\Rector\\ClassMethod\\RemoveParentDelegatingConstructorRector::matchParentConstructorCallArgs(): Argument #1 ($stmt) must be of type PhpParser\\Node\\Stmt, null given, called in /var/www/vendor/rector/rector/rules/DeadCode/Rector/ClassMethod/RemoveParentDelegatingConstructorRector.php on line 100\"\nRun Rector with \"--debug\" option and post the report here: https://github.com/rectorphp/rector/issues/new", "file": "/var/www/storage/demo/b3jqw5l5nt5mm7h2wk8s/rector_analyzed_file.php", "line": 135 } ] }

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

PHP snippet to change

<?php

class A 
{
    public function __construct()
    {
        $this->init();
    }
    
    private function init(): void
    {
		echo 'A init';
    }
}

final class B extends A
{
    private string $prop;
    
    public function __construct(string $prop) 
    {
        $this->prop = $prop;
        parent::__construct();
    }
    
    public function prop(): string
    {
        return $this->prop;
    }    
}

Config rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\DeadCode\Rector\ClassMethod\RemoveParentDelegatingConstructorRector;
use Rector\Php80\Rector\Class_\ClassPropertyAssignToConstructorPromotionRector;

return RectorConfig::configure()
    ->withRules([
        ClassPropertyAssignToConstructorPromotionRector::class,
        RemoveParentDelegatingConstructorRector::class,
    ]);

Rector version: e91db1 - released at 2026-01-03 00:21