Yii 1.1 interface naming convention was IName. Yii 2 was NameInterface. With Yii 3 I have experimented with interface naming by removing Interface suffix getting names such as ErrorRenderer.
What do you think about the experiment?
Do you prefer everything to have Interface suffix or not?
I confirm that PSR naming conventions is internal document to agree on styling on how PSR documents themselves are written. That is not a coding starndard that is meant to be applied to projects.