Psalm is a static analysis tool for finding errors in PHP applications.

To get started, check out the installation guide.

You can play around with Psalm on its website.

Documentation is available on Psalm’s website, generated from the docs folder.

Have a look at CONTRIBUTING.md.

Built by Matt Brown (@muglug).

Maintained by Orklah (@orklah), Daniil Gentili (@danog), and Bruce Weirdan (@weirdan).

The engineering team at Vimeo have provided a lot encouragement, especially @nbeliard, @erunion and @nickyr.