PHP 8.2 Introduces Standalone null and false Types
PHP 8.2 expands the language’s strong‑typing capabilities by introducing two new standalone types, null and false, which can now be used independently in type declarations, a feature previously unavailable and now available after the RFC’s acceptance and merge into the master branch.
Since PHP 7.0 the language has been gradually strengthening its type system, allowing developers to declare types for method parameters, return values, class properties and more.
Strong typing improves code robustness, maintainability and readability.
PHP 8.2, which is currently under development, adds two new standalone types: null and false.
Previously the null type could only be used in a union with another type, e.g. ?int (equivalent to int|null) or bool for logical values.
With PHP 8.2 both null and false can now be declared on their own, marking the first time these literals are allowed as independent type declarations.
The corresponding RFC has been accepted and merged into the master branch, so developers can already start experimenting with the new feature.
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