Improvements 🔧

• New PHPDoc non-empty-string type (phpstan/phpstan-src@6ef5e91), #4711, #3981
• MissingReturnRule - make behavior with checkPhpDocMissingReturn: false more strict (phpstan/phpstan-src@2656081)
• Update nikic/php-parser to work on PHP 8.1 again (phpstan/phpstan-src@0f8ead7), #5263

Bleeding edge 🔪

• Validate overriding methods in stubs (phpstan/phpstan-src@c98d0a4)
• Cross-check generic interface implementations (phpstan/phpstan-src@284af50), #5222

If you want to see the shape of things to come and adopt bleeding edge features early, you can include this config file in your project's phpstan.neon:

includes:
	- vendor/phpstan/phpstan/conf/bleedingEdge.neon

Of course, there are no backwards compatibility guarantees when you include this file. The behaviour and reported errors can change in minor versions with this file included. Learn more

Bugfixes 🐛

• Don't try to create a directory that already exists (#572), thanks @PrinsFrank!
• !empty() leads to non-empty-string (phpstan/phpstan-src@790a838), #5258
• Fix mess in ClassReflection::getInterfaces() (phpstan/phpstan-src@cd02bf8), #4854

Function signature fixes 🤖

• explode() always returns non-empty-array (phpstan/phpstan-src@25260db)
• Improve sscanf() signature (#567), thanks @fluffycondor!