<?php

class SingletonFactory {
    private static $instance = null;
    private $objects = [];
    private function __construct()  {  }
    public static function getInstance() {
        if (empty(self::$instance)){
            return self::$instance = new self();
        }
        return self::$instance;
    }

    public static function make($className, $options){
        if (!class_exists($className)) {
            return null;
        }
        if (!isset(self::getInstance()->objects[$className])){
            return (self::getInstance()->objects[$className] = new $className($options));
        }else{
            return self::getInstance()->objects[$className];
        }
    }

    public static function get($className) {
        if (isset(self::getInstance()->objects[$className])){
            return self::getInstance()->objects[$className];
        }
    }
}