wiki/content/20201110100420-php_attributes.md

date	id	title
2020-11-10	046ba725-37b9-4aca-837c-5d0cda679cc2	PHP Attributes

Description

Introduced in PHP 8.0. Attributes¹ are a way to add metadata to classes. Stitcher² has an article that goes in depth.

Syntax

use App\Attributes\ExampleAttribute;

#[ExampleAttribute]
class Foo
{
    #[ExampleAttribute]
    public const FOO = 'foo';

    #[ExampleAttribute]
    public $x;

    #[ExampleAttribute]
    public function foo(#[ExampleAttribute] $bar) { }
}

#[Attribute]
class ExampleAttribute
{
    public $value;

    public function __construct($value)
    {
        $this->value = $value;
    }
}

Footnotes

---

1. https://wiki.php.net/rfc/attributes ↩︎

2. https://stitcher.io/blog/attributes-in-php-8 ↩︎