[RFC] Property write visibility

Good morning Internals, I'd like to start discussion on a new RFC proposing a way to be able to (optionally) specify property write visibility, separate from read: https://wiki.php.net/rfc/property_write_visibility This enables readonly, write-only and immutable like semantics for PHP's properties. These are the common use cases where users tend to resort to magic methods or setter/getter methods. This proposal will as such avoid unnecessary boilerplate, makes coding easier and more ergonomic, and in the case of magic method usage improve performance. Best, André Rømcke