PHP设计模式之模板方法模式定义与用法详解

<?php
abstract class Template
{
  protected $picture;
  protected $title;
  public function display($pictureNow, $titleNow)
  {
    $this->picture = $pictureNow;
    $this->title = $titleNow;
    $this->addPicture($this->picture);
    $this->addTitle($this->title);
  }
  abstract protected function addPicture($picture);
  abstract protected function addTitle($title);
}

<?php
include_once('Template.php');
class Concrete extends Template
{
  protected function addPicture($picture)
  {
    $this->picture = 'picture/' . $picture;
    echo "图像路径为:" . $this->picture . '<br />';
  }
  protected function addTitle($title)
  {
    $this->title = $title;
    echo "<em>标题: </em>" . $this->title . "<br />";
  }
}

<?php
function __autoload($class_name)
{
  include $class_name . '.php';
}
class Client
{
  public function __construct()
  {
    $title = "chenqionghe is a handsome boy";
    $concrete = new Concrete();
    $concrete->display('chenqionghe.png', $title);
  }
}
$worker = new Client();

<?php
abstract class IHook
{
  protected $hook;
  protected $fullCost;
  public function templateMethod($fullCost, $hook)
  {
    $this->fullCost = $fullCost;
    $this->hook = $hook;
    $this->addGoods();
    $this->addShippingHook();
    $this->displayCost();
  }
  protected abstract function addGoods();
  protected abstract function addShippingHook();
  protected abstract function displayCost();
}

<?php
class Concrete extends IHook
{
  protected function addGoods()
  {
    $this->fullCost = $this->fullCost * 0.8;
  }
  protected function addShippingHook()
  {
    if(!$this->hook)
    {
      $this->fullCost += 12.95;
    }
  }
  protected function displayCost()
  {
    echo "您需要支付: " . $this->fullCost . '元<br />';
  }
}

<?php
function __autoload($class_name)
{
  include $class_name . '.php';
}
class Client
{
  private $totalCost;
  private $hook;
  public function __construct($goodsTotal)
  {
    $this->totalCost = $goodsTotal;
    $this->hook = $this->totalCost >= 200;
    $concrete = new Concrete();
    $concrete->templateMethod($this->totalCost, $this->hook);
  }
}
$worker = new Client(100);
$worker = new Client(200);