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To: Rowan Collins <rowan.collins@gmail.com>,
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Message-ID: <bb54ff12-028c-5fb3-3ab4-05c16e39ef76@gmail.com>
Date: Tue, 12 Mar 2019 14:40:22 -0700
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Subject: Re: [PHP-DEV] RFC: Locked Classes
From: smalyshev@gmail.com (Stanislav Malyshev)

Hi!

> While it can be useful, the ability to set an object property which is
> not part of the class definition can also lead to subtle bugs. Banning
> this for all objects would be a significant and painful breaking change,
> so I propose instead the option to mark a particular class with a new
> keyword, "locked".

Isn't it just:

trait Locked {
  public function __set($name, $value) {
	throw new RuntimeException("Property $name not declared!");
  }
  public function __get($name) {
	throw new RuntimeException("Property $name not declared!");
  }
  public function __unset($name) {
	throw new RuntimeException("Property $name not declared!");
  }
}

The RFC says:

While this can be achieved through strategic use of the __set, __get,
and __unset magic methods, this is long-winded, hard to optimise, and
interferes with other uses of those methods.

I don't see how it's "long-winded" - it's just three one-liners, I don't
see how "interferes with other uses" of these methods (if you want other
uses, just add code to the method), and as for optimization, I think we
already have optimization for pre-declared properties, and if you don't
use any others, it would work just as well.


-- 
Stas Malyshev
smalyshev@gmail.com