Re: [PHP-DEV] Re: Basic Type Alias

[Aleksander Machniak]

On 27.10.2023 22:42, Oladoyinbo Vincent wrote:
```php
namespace Package;

typedef MyTypes {
     type Numeric: int|float|null;
     type Chars: string|null;
     type Result: bool|null;
}

```

```php

use Package\MyTypes;

class Hello {
     use MyTypes;

     public function A(Numeric $id, Chars $message): Result
     {
     }
}

```

Your typedef is essentially just a trait. One new keyword less. What 
would be missing is direct access to type.

If we indeed allow type inside a class/trait, then natural syntax 
becomes the one used for const/var.

I think your syntax 2 is the worst anyway. Syntax 3 (use-as) will not 
gonna fly as we already have use-as in a conflicting use for classes, 
unless you change it to "use type string|null as NullableString".

I think Syntax 1 makes most sense, especially considering a case of long 
list of "subtypes" that could be class names with namespace.

Types should also support visibility (public|protected|private) when in 
class/trait context.

--
Aleksander Machniak
Kolab Groupware Developer        [https://kolab.org]
Roundcube Webmail Developer  [https://roundcube.net]
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