psalm
https://github.com/vimeo/psalm
PHP
A static analysis tool for finding errors in PHP applications
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- Issues
- Fix incorrect isset/empty/array_key_exists assertions and types and report redundant checks correctly
- Passing an object to a function should handle property types - or at least reset if unable to infer
- Possible false positive: isset check for class static variables is required
- Array type with contiguous int keys is forced to a list type, considered incompatible with property type declaration
- Different results for `strval()` and `(string)`
- CI/Shepherd not checking test files itself
- Cannot suppress InvalidParamDefault for promoted property
- Generic return type of `callable` inferred as `never`, triggering "MixedArgumentTypeCoercion"
- Callmap - distinguish between docblock and signature types
- Accessing different nested object properties trigger MixedPropertyFetch
- Docs
- PHP not yet supported