Hello php internals team,
I would like to put forward an RFC for a new feature. I am a long time user,
but have never participated as yet to the RFC.
This is my first step to gather reaction/feedback from the team.
I would be happy to implement the feature and post a PR or have someone from
the team implement this.
The feature I want to put forward is "const function arguments" (same for
methods)
This feature is available in cpp, and I believe would be a benefit to the php
community.
My RFC would fully detail and clarify what this is and how it works.
This feature allows the user to specify "const" on a function arg, so that the
argument while in a function can not be reassigned.
The following example would throw an exception at compile/runtime.
```
public function foo(const int $bar)
{
$bar =3D "buz";
}
```
The same for complex types such as arrays and classes, if a 'const' arg is
provided, while in the function it can not be reassigned.
Please let me know if this is something the team is interested in and if I
should proceed.
Kind regards.
Sam McDonald.
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