This is a basic scaffolding for Katas in PHP.
Either create your own repo using this one as template:
Or cloning the repo and apply your code directly there:
git clone https://github.com/Chemaclass/php-kata
composer test # run psalm & test-unit
composer psalm # run Psalm coverage
composer test-unit # run phpunit
vendor/bin/psalm --clear-cache # clear the psalm cache ;)