PHP 8.0 - 8.1 Features

PHP 8.0 Features

Named Arguments

function createUser(
    string \$name,
    string \$email,
    bool \$isAdmin = false,
    ?string \$phone = null,
): User { ... }

createUser(
    name: "Alice",
    email: "[email protected]",
    isAdmin: true,
);

Enums (PHP 8.1)

enum Status: string {
    case Pending = 'pending';
    case Active = 'active';
    case Inactive = 'inactive';
}

// Backed enums
enum Suit: string {
    case Hearts = 'H';
    case Diamonds = 'D';
    case Clubs = 'C';
    case Spades = 'S';
}

// Enum methods
\$status = Status::Active;
echo \$status->name;  // Active
echo \$status->value; // active
echo \$status->isActive();

Readonly Properties (PHP 8.1)

class Config {
    public readonly string \$apiKey;
    public function __construct(string \$apiKey) {
        \$this->apiKey = \$apiKey;
    }
}