PHP constructor property promotion

Description

Introduced in [PHP 8.0](PHP 8.0), constructor property promotions[fn:constructor] 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 $currency,publicint$amount,
) {}
}

Footnotes

[fn:constructor]https://wiki.php.net/rfc/constructor\_promotion