class MyClass { static $myStaticVar = "Hello, world!"; static function myStaticMethod() { echo "Static method called."; } } echo MyClass::$myStaticVar; MyClass::myStaticMethod();In this example, we have a class called `MyClass`, which includes a static variable named `$myStaticVar`, and a static method named `myStaticMethod()`. We can access the static variable and method by using the `::` operator instead of creating an object of the class. The package/library used for PHP static handler is probably just the built-in PHP language itself. There are no external packages required as static handler is a core feature of PHP object-oriented programming.