PHPStan vs Psalm: What are the differences?
Developers describe PHPStan as "PHP Static Analysis Tool - discover bugs in your code without running it!". It focuses on finding errors in your code without actually running it. It catches whole classes of bugs even before you write tests for the code. It moves PHP closer to compiled languages in the sense that the correctness of each line of the code can be checked before you run the actual line. On the other hand, Psalm is detailed as "Open-source static analysis tool for PHP (By Vimeo)". It is a type-checking static analysis tool for PHP that finds bugs humans can miss, and improves code quality. It is designed to be useful on both large legacy codebases and small, modern ones. It can help you prevent the vast majority of type-related runtime errors, and also enables you to take advantage of safe coding patterns popular in other languages.
PHPStan and Psalm can be primarily classified as "Code Review" tools.
Some of the features offered by PHPStan are:
- Static Analysis Tool
- Focuses on finding errors in your code without actually running it
On the other hand, Psalm provides the following key features:
- Static analysis tool
- Identify both obvious and hard-to-spot bugs in your code
PHPStan and Psalm are both open source tools. It seems that PHPStan with 8.86K GitHub stars and 643 forks on GitHub has more adoption than Psalm with 3.16K GitHub stars and 264 GitHub forks.