PHPMD Decomposer
Decompose phpmd.xml to PHPStan, ECS and Rector rules
Install
composer require symplify/phpmd-decomposer --dev
Use
vendor/bin/phpmd-decomposer decompose phpmd.xml
What you get are 3 configs:
phpmd-decomposed-phpstan.neon
phpmd-decomposed-ecs.php
phpmd-decomposed-rector.php