example.php

<?php

namespace DesignPatterns;

interface FactoryUser
{
   public function factoryAdministrator();
   public function factoryVendor();
   public function factoryClient();
}

class FactoryUsers implements FactoryUser
{
   public function factoryAdministrator()
   {
       return new Administrator();
   }
   public function factoryVendor()
   {
       return new Vendor();
   }
   public function factoryClient()
   {
       return new Client();
   }	
}

class Administrator 
{
	public function get()
	{
	    return "i'm administrator";
	}
}

class Vendor
{
	public function get()
	{
	    return "i'm vendor";
	}
}

class Client
{
	public function get()
	{
	    return "i'm client";
	}
}

$factoryUsers = new FactoryUsers();

$client = $factoryUsers->factoryClient();
$vendor = $factoryUsers->factoryVendor();
$admin  = $factoryUsers->factoryAdministrator();

var_dump($client->get());
var_dump($vendor->get());
var_dump($admin->get());