Phpstan array

It has a point of course, purely from static analysis phpstan array cannot reliably be inferred that c will always be of the string[] type - the phpdoc typehint declares it could be a string as well some day, phpstan array. In my practical case however, due to the definition of the API I'm calling, I cannot know beforehand that a and b are the only string keys, only that all non- c keys will be string keys with string values.

PHPStan 1. My role has shifted from the main code contributor to quality assurance, project vision [1] , and taking care of the continuous integration pipeline. At the current rate of quality pull requests from rvanvelzen1 markusstaab and herndlm I might just rename my job title to "green button pusher". This feature was developed by Richard van Velzen. After generics and conditional return types PHPStan continues to democratize its advanced features. Besides arguments, it also supports narrowing types of properties and returned values from other methods on the same object. Learn everything about this new feature in the documentation ».

Phpstan array

Currently, it is not possible to define explicit array types as other programming languages do as Java does. There have been some attempts to achieve that. One of the most recent ones was done by Nikita Popov in this pull request. Hopefully, some tools like PHPStan or Psalm help us to analyze the code statically, which means, they do not execute but check the code for inconsistencies based on PHP comments. This is a fashioned way to define a list of elements from a certain type, the problem is it becomes ambiguous, and clients that use this kind of list cannot know if keys are integers, floats or strings. We use lists when we have an array of elements with the same type. We use object shape when the array is not a collection of objects but a map which holds information. There are multiple advantages when using these PHP comments, not only provide better feedback on the array shape to the developers but IDEs will suggest auto-completion when iterating on individual elements! We can use the PHP comments on arrays anywhere class properties, function params, inline initialization…. Edit me.

I phpstan array the splat suggestions actually as they fit in with PHP's notation for additional parameters. Rule level 9 is stricter about the mixed type. So it seems there's multiple bugs: array shapes are not handled strictly, phpstan array, but once they are I can no longer define this valid use case of PHP arrays.

In some cases PHPStan knows about the literal value of an expression. Some types exist to only consist of other types learn more about union vs. This table describes which implementation is used for different bounds the X in template T of X :. Following list is by no means complete, please see the interface code for more details. The describe method returns a string representation description of the type, which is useful for error messages. For example StringType returns 'string'. The accepts method tells us whether the type accepts a different type.

The default level is 0. Once you specify a configuration file, you also have to specify the level to run. This feature enables incremental adoption of PHPStan checks. You can start using PHPStan with a lower rule level and increase it when you feel like it. To be able to run a higher level without fixing all the reported errors first, check out a feature called the baseline.

Phpstan array

PHP 8 is just around the corner! PHPStan is ready to analyse your codebases that will be taking advantage of the latest features in the coming weeks and months. Make sure you have PHPStan 0. Ambitious language feature from PHPStan contributor Ilija Tovilo that aims to be a better alternative to a switch statement. Arms also might not be executed if one of the arms is a catch-all because the comparison will be always true. Since PHPStan knows enough information about the code, it can detect it as well. I hope that this feature will lead to using more advanced types in PHPDocs , which in turn will actually lead to more type safety PHPStan will point out wrong values going into the function at the callsite :. They will make function calls with multiple arguments more clear [1]. Implementing support for this feature was pretty straightforward, so I took extra care with user-facing error messages.

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But it can also be used to read custom PHPDocs or class attributes. These are scoped to the class that defines them:. Marking a function or a method as return never tells PHPStan the function always throws an exception, or contains a way to end the script execution, like die or exit. Create a new saved reply. Read more about intersection types here ». See lines 20 and Written as Type1 Type2. Until one day when someone requests to take on multiple roles. I can now put anything I want in the array. There have been some attempts to achieve that. Because in runtime T might contain something that falls inside the E circle like InvalidArgumentException or something that falls outside of the E circle like TypeError. Edit me.

Today I was trying to fix some "missing iterable value type" errors and I have a problem to satisfy PHPStan when nested arrays. The documentation does not explicitly mention whether PHPStan supports nested array shapes I think docs should be updated with this information.

Dismiss alert. Edit me. Some types exist to only consist of other types learn more about union vs. Comment options. Task list. Array shapes with arbitrary keys Twitter Mastodon RSS. You signed out in another tab or window. The type of a mutable object can change after calling a mutating method. There are multiple advantages when using these PHP comments, not only provide better feedback on the array shape to the developers but IDEs will suggest auto-completion when iterating on individual elements! Defining type aliases will allow you to reference complex types in your PHPDocs by their alias. This visual image of overlapping circles tells us how isSuperTypeOf always responds.