It would be really great if we could get an official (or even unofficial for that matter) plugin for PhpStorm. I’m aware of this one: https://github.com/cmazx/yiistorm - however that is for Yii1 and from what I read only partially works it not broken altogether (unsure if that was fixed?).
I was thinking since JetBrains are a Yii supporter then it would most definitely be one of the first IDE Yii would officially support no!?
I asked on the JetBrains forum but unfortunately it doesn’t sound like it’s a high priority right now.