<?php class Product {     private $name;     public function setName($name) {        $this->name = $name;    }     public function getName() {        return $this->name;    }} abstract class Builder {     protected $product;     final public function getProduct() {        return $this->product;    }     public function buildProduct() {        $this->product = new Product();    }} class FirstBuilder extends Builder {     public function buildProduct() {        parent::buildProduct();        $this->product->setName(‘The product of the first builder‘);    }} class SecondBuilder extends Builder {     public function buildProduct() {        parent::buildProduct();        $this->product->setName(‘The product of second builder‘);    }} class Factory {     private $builder;     public function __construct(Builder $builder) {        $this->builder = $builder;        $this->builder->buildProduct();    }     public function getProduct() {        return $this->builder->getProduct();    }} $firstDirector = new Factory(new FirstBuilder());$secondDirector = new Factory(new SecondBuilder()); print_r($firstDirector->getProduct()->getName());// The product of the first builderprint_r($secondDirector->getProduct()->getName());// The product of second builder