You’ve missed out on the biggest feature in PHP 8. With named arguments it’s now possible for arguments to be provided in any order. You can now have functions with a large number of optional parameters, without creating a total shit show.

Instead of writing this:

$product = $productBuilder
    ->setId(101)
    ->setName('iPhone 13')
    ->setPrice(999.99)
    ->setDescription('New iPhone 13 with A15 Bionic chip')
    ->setManufacturer('Apple Inc.')
    ->setInventory(1000)
    ->setDiscount(10)
    ->build();

You can now do this:

$product = $productBuilder->set(
    id: 101,
    name: 'iPhone 13',
    price: 999.99,
    description: 'New iPhone 13 with A15 Bionic chip',
    manufacturer: 'Apple Inc.',
    inventory: 1000,
    discount: 10
)->build();