PHP 8.3 Features in PHP

// Typed class constants (PHP 8.3)
class Config {
    const string VERSION = '1.0.0';
    const int MAX_USERS = 100;
}

// #[\Override] attribute (PHP 8.3)
class Base {
    public function greet(): string {
        return 'Hello';
    }
}

class Child extends Base {
    #[\Override]
    public function greet(): string {
        return 'Hi';
    }
}

// json_validate() (PHP 8.3)
if (json_validate($jsonString)) {
    $data = json_decode($jsonString, true);
}

// Dynamic class constants (PHP 8.3)
class Status {
    const ACTIVE = 'active';
    const INACTIVE = 'inactive';
}
$name = 'ACTIVE';
echo Status::{$name};  // 'active'