psalm

Psalm is a static analysis tool for finding errors in PHP applications. It analyzes PHP code without executing it, aiming to surface bugs and security vulnerabilities before runtime. The project is distributed via Packagist as vimeo/psalm and provides an installation guide in its documentation. A live demo is available on the project website, where users can try the analyzer interactively. Full documentation is published on the Psalm website and generated from the repository's docs folder. The README highlights community channels on Telegram: an official news channel and a community group. It also notes that development can be supported through support contracts from the active maintainer, covering integration into existing codebases, issue support, and additional feature development. Contribution guidance is provided in CONTRIBUTING.md. The tool was built by Matt Brown and is maintained by Daniil Gentili, with former maintainers Orklah and Bruce Weirdan. The engineering team at Vimeo is credited for encouragement and support.