PHP 8.1 Syntax Showcase

2021-11-30T19:37:00+02:00

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

<?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]);

IsResource

2021-09-28T04:42:00+03:00

Inspired by a recent discussion in the PHP Internals, I decided to provide a userland solution. Check this:

<?php

$hash = hash_init('md5');

// vanilla functions:
is_resource($hash); // true in PHP <= 7.1, false in PHP >= 7.2
get_resource_type($hash); // "Hash Context" in PHP <= 7.1, various errors otherwise

// library functions:
\Arokettu\IsResource\is_resource($hash); // true
\Arokettu\IsResource\get_resource_type($hash); // "Hash Context"

Get it on my dev portal: https://sandfox.dev/php/is-resource.html

Sand Fox (Posts about php 8.1)

PHP 8.1 Syntax Showcase

IsResource