i was kinda wondering maybe it's worth it to write an RFC on PHP type alias. this will be really useful in the sense of maintenance, re-usability, readability and many more..
```
<?php
type T = bool|int;
type Result = string;
function greeting(T $input): Result {
return match() {
true, 1 => 'hello user :) ',
false, 2 => 'good-bye user'
}
}
```
What's your opinion on this?
