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适配器很容易理解, 大多数人家庭都有手机转接器, 用来为移动电话充电,这就是一种适配器. 如果只有USB接头, 就无法将移动电话插到标准插座上. 实际上, 必须使用一个适配器, 一端接USB插头, 一端接插座. 当然, 你可以拿出电气工具,改装USB连接头, 或者重新安装插座, 不过这样会带来很多额外的工作, 而且可能会把连接头或插座弄坏. 所以, 最可取的方法就是找一个适配器. 软件开发也是如此.
class ChildClass extends ParentClass implements ISomeAdapter
{
}
<?php
class DollarCalc
{
private $dollar;
private $product;
private $service;
public $rate = 1;
public function requestCalc($productNow, $serviceNow)
{
$this->product = $productNow;
$this->service = $serviceNow;
$this->dollar = $this->product + $this->service;
return $this->requestTotal();
}
public function requestTotal()
{
$this->dollar *= $this->rate;
return $this->dollar;
}
}
<?php
class EuroCalc
{
private $euro;
private $product;
private $service;
public $rate = 1;
public function requestCalc($productNow, $serviceNow)
{
$this->product = $productNow;
$this->service = $serviceNow;
$this->euro = $this->product + $this->service;
return $this->requestTotal();
}
public function requestTotal()
{
$this->euro *= $this->rate;
return $this->euro;
}
}
<?php
interface ITarget
{
public function requester();
}
<?php
include_once(‘EuroCalc.php‘);
include_once(‘ITarget.php‘);
class EuroAdapter extends EuroCalc implements ITarget
{
public function __construct()
{
$this->requester();
}
public function requester()
{
$this->rate = 0.8111;
return $this->rate;
}
}
<?php
include_once(‘EuroAdapter.php‘);
include_once(‘DollarCalc.php‘);
class Client
{
public function __construct()
{
$euro = ‘€‘;
echo "区元: $euro" . $this->makeApapterRequest(new EuroAdapter()) . ‘<br />‘;
echo "美元: $: " . $this->makeDollarRequest(new DollarCalc()) . ‘<br />‘;
}
private function makeApapterRequest(ITarget $req)
{
return $req->requestCalc(40,50);
}
private function makeDollarRequest(DollarCalc $req)
{
return $req->requestCalc(40,50);
}
}
$woker = new Client();
Euros: €72.999 Dollars: $: 90
<?php
interface IFormat
{
public function formatCSS();
public function formatGraphics();
public function horizontalLayout();
}
<?php
include_once(‘IFormat.php‘);
class Desktop implements IFormat
{
public function formatCSS()
{
echo "引用desktop.css<br />";
}
public function formatGraphics()
{
echo "引用desktop.png图片<br />";
}
public function horizontalLayout()
{
echo ‘桌面:水平布局‘;
}
}
<?php
interface IMobileFormat
{
public function formatCSS();
public function formatGraphics();
public function verticalLayout();
}
<?php
include_once(‘IMobileFormat.php‘);
class Mobile implements IMobileFormat
{
public function formatCSS()
{
echo "引用mobile.css<br />";
}
public function formatGraphics()
{
echo "引用mobile.png图片<br />";
}
public function verticalLayout()
{
echo ‘移动端:垂直布局‘;
}
}
<?php
include_once(‘IFormat.php‘);
include_once(‘Mobile.php‘);
class MobileAdapter implements IFormat
{
private $mobile;
public function __construct(IMobileFormat $mobileNow)
{
$this->mobile = $mobileNow;
}
public function formatCSS()
{
$this->mobile->formatCSS();
}
public function formatGraphics()
{
$this->mobile->formatGraphics();
}
public function horizontalLayout()
{
$this->mobile->verticalLayout();
}
}
<?php
include_once(‘Mobile.php‘);
include_once(‘MobileAdapter.php‘);
class Client
{
private $mobile;
private $mobileAdapter;
public function __construct()
{
$this->mobile = new Mobile();
$this->mobileAdapter = new MobileAdapter($this->mobile);
$this->mobileAdapter->formatCSS();
$this->mobileAdapter->formatGraphics();
$this->mobileAdapter->horizontalLayout();
}
}
$worker = new Client();
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原文地址：http://www.cnblogs.com/chenqionghe/p/4780027.html
