Useful PHP 8.2 Features You Should Know

PHP 8.2 introduced several features that improve code quality and developer experience. Here are some highlights.

Readonly Classes

You can now mark entire classes as readonly:

readonly class User {
    public function __construct(
        public string $name,
        public string $email,
    ) {}
}

Disjunctive Normal Form (DNF) Types

PHP 8.2 supports more expressive type declarations:

function test((A&B)|C $value): void {}

#[\SensitiveParameter]

Hide sensitive parameters from stack traces:

function login(#[\SensitiveParameter] string $password) {
    // ...
}

These features help write safer, cleaner PHP code.