env is a [Laravel function](https://github.com/laravel/framework/blob/10.x/src/Illuminate/Support/helpers.php#L136-L139) https://github.com/szepeviktor/phpcs-psr-12-neutron-hybrid-ruleset/blob/135b5433d113b2cc2236788938f643d71662b2f3/PSR12NeutronRuleset/ruleset.xml#L20
