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Package type-guard
Short Description Type Guard module is part of the Gloss PHP, and allows you to narrow down the type of an variable to a more specific type.
License MIT
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Informations about the package type-guard
This library is a work in progress. Please, do not use it in production.
Type Guard module is part of the Pinkary Project, and allows you to narrow down the type of a variable to a more specific type. Using the type function, you can perform specific checks to determine the type of an object and then use that object in a way that is type-safe according to the PHPStan and Psalm static analyzers.
Here is an example, where we use the type function to narrow down the type of a variable that previously had a mixed type:
Here is another example, where we use the type function to narrow down the type of a variable that previously could be null. In the process, zero type information is lost:
And one more example, where we narrow down the type of a variable to a Collection without losing the type information:
Installation
Requires PHP 8.2+
You may use Composer to install Type Guard into your PHP project:
Usage
asasInt()asFloat()asString()asBool()asNull()asCallable()not()->null()asArray()asIterable()
as
Asserts and narrows down the type of the given variable to a more specific type.
asInt()
Asserts and narrows down the type of the given variable to an integer.
asFloat()
Asserts and narrows down the type of the given variable to a float.
asString()
Asserts and narrows down the type of the given variable to a string.
asBool()
Asserts and narrows down the type of the given variable to a boolean.
asNull()
Asserts and narrows down the type of the given variable to a null.
asCallable()
Asserts and narrows down the type of the given variable to a callable.
not()->null()
Asserts and narrows down the type of the given variable to a non-null value.
asArray()
Asserts and narrows down the type of the given variable to an array.
asIterable()
Asserts and narrows down the type of the given variable to an iterable.
Type Guard is part of the Pinkary Project project. It was created by Nuno Maduro and open-sourced under the MIT license.
