The PHP RFC (Request for Comments) proposing readonly properties and parameters has been implemented in PHP 8.3, the latest version of the popular programming language. This feature, which was approved in 2020, enables developers to mark class properties and method parameters as read-only, preventing accidental modification of their values.
The implementation of the readonly feature in PHP 8.3 follows the original proposal closely, with a few minor adjustments based on community feedback. The readonly modifier can now be used for properties defined in an interface, and it can also be applied to magic properties such as __get and __set.
The readonly feature provides a way for developers to write more robust code that is less prone to errors caused by accidental modification of data. It is especially useful in large codebases with many contributors, where ensuring data integrity can be a significant challenge.
Overall, the implementation of the readonly feature in PHP 8.3 is a significant step forward for the language, making it easier for developers to write reliable, maintainable code.
More information https://wiki.php.net/rfc/readonly_amendments
