How do I tell Rector to not apply any changes except those related to PHP compatibility?

Question

As title states, I'm only interested in issues that can affect PHP compatibility, but it keeps changing array() into [] etc. Any tips?

My rector.php config so far:

return static function (RectorConfig $rectorConfig): void {
    $rectorConfig->rules([]);
    $rectorConfig->sets([LevelSetList::UP_TO_PHP_82]);
    $rectorConfig->paths([
        // my paths
    ]);
};

Looks like the only way is to walk through the rules one by one and add them in the skip list? For example

    ->withSkip([
        LongArrayToShortArrayRector::class,
        // ... more rules that don't break compatibility actually
    ])

Sadly, lots of rules are related to best practice and using latest features, rather than what breaks PHP, polluting the needed changes with the recommended changes.

Answer 1

This did it for me

->withSkip([
        Rector\Php54\Rector\Array_\LongArrayToShortArrayRector::class,
    ])      

This helped me find rules

vendor/bin/rector list-rules