PHP 8 Attributes - the annotations of PHP

Code
<?php

#[Attribute]
class 
StrAttribute
{
    public function 
__construct(public string $value)
    {
    }
}

#[
Attribute]
class 
IntAttribute
{
    public function 
__construct(public int $value)
    {
    }
}

#[
StrAttribute('Class')]
#[
IntAttribute(42)]
class 
Implementation
{
    #[
StrAttribute('Method')]
    public function 
execute(): void
    
{
    }
}

$reflectionClass = new ReflectionClass(Implementation::class);

foreach (
$reflectionClass->getAttributes() as $attribute) {
    echo 
$attribute->newInstance()->value PHP_EOL;
}

$reflectionMethod $reflectionClass->getMethod('execute');

foreach (
$reflectionMethod->getAttributes() as $attribute) {
    echo 
$attribute->newInstance()->value PHP_EOL;
}
Result
Class
42
Method
Used Versions
PHP 8.0, Laminas MVC 3.2, Symfony 5.2, Laravel 8.28, PHPUnit 9.5, Doctrine ORM 2.8