Utf8DecodeEncodeToMbConvertEncodingRector doesn't change anything

[W0rma]

I'm not sure if I have some misconfiguration on my side.

Utf8DecodeEncodeToMbConvertEncodingRector doesn't seems to change anything.

See https://getrector.com/demo/3ff9cb0b-b2cb-4065-a457-72bfce134c68

What am I doing wrong?

[TomasVotruba]

Do you use PHP 8.2? It must be in composer.json or local PHP.

https://php.watch/versions/8.2/utf8_encode-utf8_decode-deprecated

[samsonasik]

You need to define php version feature if the composer.json doesn't define php 8.2

<?php

use Rector\Config\RectorConfig;
use Rector\Php82\Rector\FuncCall\Utf8DecodeEncodeToMbConvertEncodingRector;
use Rector\Core\ValueObject\PhpVersionFeature;

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->phpVersion(PhpVersionFeature::DEPRECATE_UTF8_DECODE_ENCODE_FUNCTION);
    
    $rectorConfig->rule(Utf8DecodeEncodeToMbConvertEncodingRector::class);
};

Ref https://getrector.com/demo/b375e3bb-5680-480c-8594-de7e55ebae0c