建造者模式（描述语言PHP）

Builder 模式强调的是一步步创建对象，并通过相同的创建过程可以获
得不同的结果对象，一般来说 Builder 模式中对象不是直接返回的。

<?php

/**
 * 建造者模式
 *
 * 将一个复杂的构建与其表示相分离，使得同样的构建过程可以创建不同的表示。
 */
class BuilderModern
{
    public function buildHead(){}
    public function buildBody(){}
    public function buildLeftArm(){}
    public function buildRightArm(){}
    public function buildLeftLeg(){}
    public function buildRightLeg(){}
}
// 构建一个高个子的
class HeigthPeople extends BuilderModern
{
    public function buildBody()
    {
        // TODO: Implement buildBody() method.
    }

    public function buildLeftArm()
    {
        // TODO: Implement buildLeftArm() method.
    }

    public function buildHead()
    {
        // TODO: Implement buildHead() method.
    }

    public function buildRightArm()
    {
        // TODO: Implement buildRightArm() method.
    }

    public function buildLeftLeg()
    {
        // TODO: Implement buildLeftLeg() method.
    }

    public function buildRightLeg()
    {
        // TODO: Implement buildRightLeg() method.
    }

}
// 构建一个矮个子的
class ShortPeople extends BuilderModern
{
    public function buildBody()
    {
        // TODO: Implement buildBody() method.
    }

    public function buildLeftArm()
    {
        // TODO: Implement buildLeftArm() method.
    }

    public function buildHead()
    {
        // TODO: Implement buildHead() method.
    }

    public function buildRightArm()
    {
        // TODO: Implement buildRightArm() method.
    }

    public function buildLeftLeg()
    {
        // TODO: Implement buildLeftLeg() method.
    }

    public function buildRightLeg()
    {
        // TODO: Implement buildRightLeg() method.
    }

}

class Manage
{
    public $builder = null;
    public function __construct(Builder $builder)
    {
        $this->builder = new $builder();
    }

    public function create()
    {
        $this->builder->buildHead();
        $this->builder->buildBody();
        $this->builder->buildLeftArm();
        $this->builder->buildRightArm();
        $this->builder->buildLeftLeg();
        $this->builder->buildRightLeg();
    }
}