Please note that this website section is under development as of June 2020. The plan is to write about development of custom extensions in much more detail. Thanks for understanding.
Be aware that PHPStan configuration settings are being cached. You might need to clear this cache when working on an extension in order for your phpstan instance to acknowledge your changes.
This cache can be cleared the
clear-result-cache command. Learn more »
Result cache also gets disabled when running with