Is it possible to create static classes in PHP (like in C#)?

Question

I want to create a static class in PHP and have it behave like it does in C#, so

1. Constructor is automatically called on the first call to the class
2. No

Answer 1

object cannot be defined staticly but this works

final Class B{
  static $var;
  static function init(){
    self::$var = new A();
}
B::init();