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:

     
     public function run($index)
     {   
-        return str_replace($this->find, $this->replace, $this->items[$index]); 
+        return str_replace($this->find, $this->replace, (string) $this->items[$index]); 
     }
 }

PHP snippet to change

<?php

final class Replacer
{
    public function __construct(
        private string $find,
        private string $replace,
        private array $items,
    ) {}
    
    public function run($index)
    {   
        return str_replace($this->find, $this->replace, $this->items[$index]); 
    }
}

Applied Rules:

NullToStrictStringFuncCallArgRector

Not a change you expect?

Create an issue on GitHub
...or to speed up fix – add a test fixture

Config rector.php

<?php

use Rector\Config\RectorConfig;
use Rector\Php81\Rector\FuncCall\NullToStrictStringFuncCallArgRector;

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

Rector version: 341fbe - released at 2025-06-16 13:12