wiki/content/20201110101308-php_constructor_property_promotion.md

date	id	title
2020-11-10	19579c31-1dcc-4d11-b2f8-5f9180fa66d3	PHP constructor property promotion

Description

Introduced in PHP 8.0, constructor property promotions¹ add new syntatctic sugar to create value & data transfer objects.

Syntax

class Money
{
    public Currency $currency;

    public int $amount;

    public function __construct(
        Currency $currency,
        int $amount,
    ) {
        $this->currency = $currency;
        $this->amount = $amount;
    }
}

can be replaced with

class Money
{
    public function __construct(
        public Currency $currency,
        public int $amount,
    ) {}
}

Footnotes

---

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