Online PHP editor | refs for 4v3k7

@ 2015-03-17T21:38:16Z

<?php
class Connection {}

class Singleton{
  static public function get_instance(){
     static $i;
     $i ?: $i = new Connection();
     return $i;
  }
}

class A extends Singleton{}
class B extends A{}

var_dump(A::get_instance());

var_dump(B::get_instance());