I use both this and Psalm. I find PHP Insights very helpful in ensuring I’m meeting the standards I’ve set out because — as Matt notes in his comment — it is es

I use both this and Psalm. I find PHP Insights very helpful in ensuring I’m meeting the standards I’ve set out because — as Matt notes in his comment — it is essentially a nice interface to various existing code quality tools. Psalm on the other hand helps keep my code bug free through excellent static analysis. Psalm is essential, insights is beneficial. I eagerly choose to use both, together, but in a world where you can use just one: Psalm.