PHP 8.1 Syntax Showcase
#######################

:category:  PHP
:tags:      php 8.1
:date:      2021-11-30 19:37:00 +0200

PHP 8.1 was released when I was suffering from COVID so I'm a bit late.

.. code-block:: php

    <?php

    enum Status
    {
        case OK;
        case Error;
    }

    #[SomeAttr(new SomeNestedAttr())]
    class TestTest
    {
        public function __construct(
            public readonly Status $status = Status::OK,
            private Logger $logger = new FileLogger(perm: 0o644),
        ) {}

        public function process(Iterator&Countable $value)
        {
            if (count($value) === 0) {
                $this->error();
            }
        }

        public function error(): never
        {
            $this->logger->error('Error!');
            exit;
        }
    }

    $test = new TestTest();

    $arr1 = ['a' => new ArrayObject()];
    $arr2 = ['b' => new ArrayIterator()];

    $result = array_map($test->process(...), [...$arr1, ...$arr2]);