Support PHP 8 and its new features

[carlosas]

This list is based on phpactor/phpactor#1135

Package Support

Ensuring that all packages support 8.0 and phpat can be composer-installed in a PHP 8.0 environment ✅

Language Support

Constructor promotion ✅

class CustomerDTO
{
    public function __construct(
        public Email $email, 
        public DateTimeImmutable $birth_date,
    ) {}
}

Named Parameters ✅

$data = new CustomerData(
    email: new Email('[email protected]')
);

Union Types ✅

Currently supported in docblocks

class Example {
    private int|float $foo;
    public function squareAndAdd(float|int $bar): int|float {
        return $bar ** 2 + $foo;
    }
}

$class is instanceof Foo|Bar

Attributes ✅ ⚠️

TODO:

• Attribute arguments might use types
• Currently only class and method attributes are catched

Match and Throw Expression ✅

match ($class) {
    $class instanceof Foo => 'one',
    $class instanceof Bar => 'bar',
    default => throw new Exception('error');
}

[j6s]

There are currently a couple of things standing in the way of phpat being installable on PHP8:

• carlosas/simple-event-dispatcher
  • Allow installation in PHP8.* environments simple-event-dispatcher#1 should resolve that
• roave/better-reflections
  • See also: PHP 8 compatibility Roave/BetterReflection#701

[Lukasz93P]

Hi @carlosas any updates on this topic? Is support for php8 coming soon?

[carlosas]

Hello @Lukasz93P
I'm doing some work in a dev branch to support PHP 8.0, but it will still not catch some new features (so it might not find relations on, for instance, union types) or the execution might even fail. I'm going to continue working on the support so hopefully I will release it soon-ish.

Right now you can test the progress using the version v0.8.x-dev

[carlosas]

I have created some tests and with the recent changes the current support in v0.8.x-dev is:

Version support ✅
Constructor property promotion ✅
Named arguments ✅
Union types ✅
Attributes ❌ (Aug 6th 13:30 -> ✅)
Match with Throw expression ✅

[Lukasz93P]

@carlosas "it will still not catch some new features", ok it sounds great despite that, I will be very happy being able to install this package with php version specified as 8 in my composer file, thats all, so thanks for answering my question.

[carlosas]

Released https://github.com/carlosas/phpat/releases/tag/0.8.0