Typed Properties Coming to PHP 7.4

With the introduction of scalar types and return types, PHP 7 greatly increased the power of PHP's type system. However, it is currently not possible to declare types for class properties, forcing developers to use getter and setter methods instead to enforce type contracts. This requires unnecessary boilerplate, makes usage less ergonomic and hurts performance. This RFC resolves this issue by introducing support for first-class property type declarations.

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