$ sudo docker run –rm php:8.0-rc php -v
$ echo “ index.php
$ docker run –rm -p 8000:80 -v `pwd`:/var/www/html php:8.0-rc-apache
declare(strict_types=1); $f = function(int|string $v){ var_dump($v); }; $f(100); $f("abc"); $f(true);
declare(strict_types=1); final class User { public function __construct( public int $id, private string $name, ){} } var_dump(new User(1, 'Foo'));
ふむー