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¡¡¡¡±¾ÎıêÇ©£ºPHP,Éè¼ÆÄ£Ê½,ÊÊÅäÆ÷ģʽ

±¾ÎÄʵÀý½²ÊöÁËPHPÉè¼ÆÄ£Ê½Ö®ÊÊÅäÆ÷ģʽ¶¨ÒåÓëÓ÷¨ ¡£·ÖÏí¸ø´ó¼Ò¹©´ó¼Ò²Î¿¼£¬¾ßÌåÈçÏ£º

ÊÊÅäÆ÷ºÜÈÝÒ×Àí½â, ´ó¶àÊýÈ˼ÒÍ¥¶¼ÓÐÊÖ»úת½ÓÆ÷, ÓÃÀ´ÎªÒƶ¯µç»°³äµç,Õâ¾ÍÊÇÒ»ÖÖÊÊÅäÆ÷. Èç¹ûÖ»ÓÐUSB½ÓÍ·, ¾ÍÎÞ·¨½«Òƶ¯µç»°²åµ½±ê×¼²å×ùÉÏ. ʵ¼ÊÉÏ, ±ØÐëʹÓÃÒ»¸öÊÊÅäÆ÷, Ò»¶Ë½ÓUSB²åÍ·, Ò»¶Ë½Ó²å×ù. µ±È», Äã¿ÉÒÔÄóöµçÆø¹¤¾ß,¸Ä×°USBÁ¬½ÓÍ·, »òÕßÖØÐ°²×°²å×ù, ²»¹ýÕâÑù»á´øÀ´ºÜ¶à¶îÍâµÄ¹¤×÷, ¶øÇÒ¿ÉÄÜ»á°ÑÁ¬½ÓÍ·»ò²å×ùŪ»µ. ËùÒÔ, ×î¿ÉÈ¡µÄ·½·¨¾ÍÊÇÕÒÒ»¸öÊÊÅäÆ÷. Èí¼þ¿ª·¢Ò²ÊÇÈç´Ë.

ÀàÊÊÅäÆ÷ģʽ(ʹÓü̳Ð)

ÀàÊÊÅäÆ÷ģʽºÜ¼òµ¥, ²»¹ýÓë¶ÔÏóÊÊÅäÆ÷ģʽÏà±È, ÀàÊÊÅäÆ÷ģʽµÄÁé»îÐÔÈõЩ, ÀàÊÊÅäÆ÷¼òµ¥µÄÔ­ÒòÔÚÓÚ , ÊÊÅäÆ÷(Adapter)»á´Ó±»ÊÊÅäÕß(Adaptee)¼Ì³Ð¹¦ÄÜ, ËùÒÔÊÊÅäģʽÖÐÐèÒª±àдµÄ´úÂë±È½ÏÉÙ.

ÓÉÓÚÀàÊÊÅäÆ÷ģʽ°üº¬Ë«Öؼ̳Ð, µ«ÊÇPHP²¢²»Ö§³ÖË«ÖØ¼Ì³Ð, ²»¹ýÐÒÔ˵ÄÊÇ,PHP¿ÉÒÔÓýӿÚÀ´Ä£ÄâË«ÖØ¼Ì³Ð, ÏÂÃæÊÇÒ»¸öÕýÈ·µÄ½á¹¹, ²»½ö¼Ì³ÐÁËÒ»¸öÀà, ͬʱ»¹¼Ì³ÐÁËÒ»¸ö½Ó¿Ú

class ChildClass extends ParentClass implements ISomeAdapter
{
}

ʵÏÖÀàÊÊÅäÆ÷ģʽʱ, ²ÎÓëÕß±ØÐë°üÀ¨Ò»¸öPHP½Ó¿Ú

ÏÂÃæÒÔÒ»¸ö»õ±Ò¶Ò»»ÎªÀýÀ´ÑÝʾ:

¼ÙÉèÓÐÒ»¸öÆóÒµÍøÕ¾ÔÚͬʱÏúÊÛÈí¼þ·þÎñºÍÈí¼þ²úÆ·, Ŀǰ, ËùÓн»Ò×¶¼ÔÚÃÀ¹ú½øÐÐ, ËùÒÔÍêÈ«¿ÉÒÔÓÃÃÀÔªÀ´Íê³ÉËùÓмÆËã.ÏÖÔÚ¿ª·¢ÈËԱϣÍûÄÜÓÐÒ»¸öת»»Æ÷ÄÜ´¦ÀíÃÀÔªºÍÅ·ÔªµÄ¶Ò»», ¶ø²»¸Ä±äÔ­À´°´ÃÀÔª½»Ò×¶îµÄÀà.ͨ¹ýÔö¼ÓÒ»¸öÊÊÅäÆ÷, ÏÖÔÚ³ÌÐò¼´¿ÉÒÔÓÃÃÀÔª¼ÆËãÒ²¿ÉÒÔÓÃÅ·Ôª¼ÆËã.

DollarCalc.php

<?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;
 }
}

²é¿´Õâ¸öÀà,¿ÉÒÔ¿´µ½ÆäÖÐÓÐÒ»¸öÊôÐÔ$rate,requestTotal()·½·¨Ê¹ÓÃ$rate¼ÆËãÒ»´Î½»Ò׵Ľð¶î.ÔÚÕâ¸ö°æ±¾ÖÐ, Õâ¸öÖµÉèÖÃΪ1,ʵ¼ÊÉÏ×ܽð¶îÎÞÐèÔÙ¹ÔÒÔ¶Ò»»ÂÊ, ²»¹ýÈç¹ûҪΪ¿Í»§ÌṩÕÛ¿Û»òÕßÒªÔö¼Ó¶îÍâ·þÎñ»ò²úÆ·µÄ¸½¼Ó·Ñ, $rate±äÁ¿»áºÜ·½±ã. Õâ¸öÀಢ²»ÊÇÊÊºÏÆ÷ģʽµÄÒ»²¿·Ö, ²»¹ýÕâÊÇÒ»¸öÆðµã.

ÐèÇó±ä»¯ÁË

ÏÖÔÚ¿Í»§µÄ¹«Ë¾ÒªÏòÅ·ÖÞ·¢Õ¹,ËùÒÔÐèÒª¿ª·¢Ò»¸öÓ¦ÓÃ, Äܹ»ÓÃÅ·ÔªÍê³ÉͬÑùµÄ¼ÆËã. ÄãÏ£ÍûÕâ¸öÅ·Ôª¼ÆËãÄܹ»ÏñDollarCalcÒ»Ñù, ËùÒª×öµÄ¾ÍÊǸıä±äÁ¿Ãû.

EuroCalc.php

<?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;
 }
}

½ÓÏÂÀ´, ÔÙ°ÑÓ¦ÓÃµÄÆäÓಿ·Ö²åÈëµ½EuroCalcÀàÖÐ. ²»¹ý,ÒòΪ¿Í»§µÄËùÓÐÊý¾Ý¶¼Êǰ´ÃÀÔª¼ÆËãµÄ.»»¾ä»°Ëµ, Èç¹û²»ÖØÐ¿ª·¢Õû¸ö³ÌÐò, ¾ÍÎÞ·¨ÔÚϵͳÖÐ"²åÈë"Õâ¸öÅ·Ôª¼ÆËã. µ«ÊÇÄã²»ÏëÕâô×ö. ΪÁ˼ÓÈëEuroCalc, ÄãÐèÒªÒ»¸öÊÊÅäÆ÷: ¾ÍÏñÕÒÒ»¸öÊÊÅäÆ÷À´ÊÊӦŷÖ޵IJå×ùÒ»Ñù, ¿ÉÒÔ´´½¨Ò»¸öÊÊÅäÆ÷, ʹÄãµÄϵͳÄܹ»Ê¹ÓÃÅ·Ôª. ÐÒÔ˵ÄÊÇ, ÀàÊÊÅäÆ÷ÕýÊÇΪÕâÑùµÄÇé¿öÉè¼ÆµÄ.Ê×ÏÈÐèÒª´´½¨Ò»¸ö½Ó¿Ú. ÔÚÕâ¸öÀàͼÖÐ, Õâ¸ö½Ó¿ÚÃûΪITarget. ËüÖ»ÓÐÒ»¸ö·½·¨requester(). requester()ÊÇÒ»¸ö³éÏó·½·¨, ÒªÓɽӿڵľßÌåʵÏÖÀ´ÊµÏÖÕâ¸ö·½·¨.

ITarget.php

<?php
interface ITarget
{
 public function requester();
}

ÏÖÔÚ¿ª·¢ÈËÔ±¿ÉÒÔʵÏÖrequester()·½·¨, ÇëÇóÅ·Ôª¶ø²»ÊÇÃÀÔª.

ÔÚʹÓü̳еÄÊÊÅäÆ÷Éè¼ÆÄ£Ê½ÖÐ, ÊÊÅäÆ÷(Adapter)²ÎÓë¶¼¼ÈʵÏÖITarget½Ó¿Ú,»¹ÊµÏÖÁ˾ßÌåÀàEuroCalc. ´´½¨EuroAdapter²»ÐèÒª×öÌ«¶à¹¤×÷, ÒòΪ´ó²¿·Ö¹¤×÷ÒѾ­ÔÚEuroCalÀàÖÐÍê³É.ÏÖÔÚÒª×öµÄ¾ÍÊÇʵÏÖrequest()·½·¨, ʹËüÄܰÑÃÀԪֵת»»ÎªÅ·ÔªÖµ.

EuroAdapter.php

<?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;
 }
}

ÀàÊÊÅäģʽÖÐ, Ò»¸ö¾ßÌåÀà»á¼Ì³ÐÁíÒ»¸ö¾ßÌåÀà, ÓÐÕâÖֽṹµÄÉè¼ÆÄ£Ê½ºÜÉÙ¼û, ´ó¶àÊýÉè¼ÆÄ£Ê½ÖÐ, ¼¸ºõ¶¼ÊǼ̳ÐÒ»¸ö³éÏóÀà, ²¢ÓÉÀà¸ù¾ÝÐèҪʵÏÖÆä³éÏó·½·¨ºÍÊôÐÔ. »»¾ä»°Ëµ, Ò»°ã̸µ½¼Ì³Ðʱ, ¶¼ÊǾßÌåÀà¼Ì³Ð³éÏóÀà.

ÓÉÓÚ¼ÈʵÏÖÁËÒ»¸ö½Ó¿ÚÓÖÀ©Õ¹ÁËÒ»¸öÀà, ËùÒÔEuroAdapterÀàͬʱӵÓиýӿں;ßÌåÀàµÄ½Ó¿Ú. ͨ¹ýʹÓÃrequester()·½·¨, EuroAdapterÀà¿ÉÒÔÉèÖÃrateÖµ(¶Ò»»ÂÊ), ´Ó¶øÄÜʹÓñ»ÊÊÅäÕߵŦÄÜ, ¶øÔª¶ø×öÈκθıä.

ÏÂÃæ¶¨ÒåÒ»¸öClientÀà, ´ÓEuroAdapterºÍDollarCalcÀà·¢³öÇëÇó. ¿ÉÒÔ¿´µ½,Ô­À´µÄDollarCalcÈÔÄܺܺõع¤×÷, ²»¹ýËüûÓÐITarget½Ó¿Ú.

Client.php

<?php
include_once('EuroAdapter.php');
include_once('DollarCalc.php');
class Client
{
 public function __construct()
 {
  $euro = '€';
  echo "ÇøÔª: $euro" . $this->makeApapterRequest(new EuroAdapter()) . '<br />';
  echo "ÃÀÔª: $: " . $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();

ÔËÐнá¹ûÈçÏÂ:

Euros: €72.999
Dollars: $: 90

¿ÉÒÔ¿´µ½,ÃÀÔªºÍÅ·Ôª¶¼¿ÉÒÔ´¦Àí, Õâ¾ÍÊÇÊÊÅäÆ÷ģʽµÄ·½±ãÖ®´¦.

Õâ¸ö¼ÆËãºÜ¼òµ¥, Èç¹ûÊÇÕë¶Ô¸üΪ¸´ÔӵļÆËã, ¼Ì³ÐÒªÌṩ½¨Á¢ÀàÊÊÅäÆ÷µÄTarget½Ó¿ÚµÄ±ØÒª½Ó¿ÚºÍ¾ßÌåʵÏÖ

ʹÓÃ×éºÏµÄÊÊÅäÆ÷ģʽ

¶ÔÏóÊÊÅäÆ÷ģʽʹÓÃ×éºÏ¶ø²»ÊǼ̳Ð, ²»¹ýËüÒ²»áÍê³ÉͬÑùµÄÄ¿±ê. ͨ¹ý±È½ÏÕâÁ½¸ö°æ±¾µÄÊÊÅäÆ÷ģʽ, ¿ÉÒÔ¿´³öËüÃǸ÷×ÔµÄÓÅȱµã. ²ÉÓÃÀàÊÊÅäÆ÷ģʽʱ,ÊÊÅäÆ÷¿ÉÒԼ̳ÐËüÐèÒªµÄ´ó¶àÊý¹¦ÄÜ, Ö»ÊÇͨ¹ý½Ó¿ÚÉÔ΢µ÷. ÔÚ¶ÔÏóÊÊÅäÆ÷ģʽÖÐ ÊÊÅäÆ÷(Adapter)²ÎÓëʹÓñ»ÊÊÅäÕß(Adaptee), ²¢ÊµÏÖTarget½Ó¿Ú. ÔÚÀàÊÊÅäÆ÷ģʽÖÐ, ÊÊÅäÆ÷(Adapter)ÔòÊÇÒ»¸ö±»ÊÊÅäÕß(Adaptee), ²¢ÊµÏÖTarget½Ó¿Ú.

ʾÀý: ´Ó×ÀÃæ»·¾³×ªÏòÒÆ¶¯»·¾³

PHP³ÌÐòÔ±¾­³£»áÓöµ½ÕâÑùÒ»¸öÎÊÌâ:ÐèÒªÊÊÓ¦ÒÆ¶¯»·¾³¶ø×ö³öµ÷Õû.²»¾Ã֮ǰ,Äã¿ÉÄÜÖ»ÐèÒª¿¼ÂÇÌṩһ¸öÍøÕ¾À´ÊÊÓ¦¶àÖÖ²»Í¬µÄ×ÀÃæ»·¾³. ´ó¶àÊý×ÀÃæ¶¼Ê¹ÓÃÒ»¸ö²¼¾Ö, ÔÙÓÉÉè¼ÆÈËÔ±ÈÃËü¸üÃÀ¹Û. ¶ÔÓÚÒÆ¶¯É豸, Éè¼ÆÈËÔ±ºÍ¿ª·¢ÈËÔ±²»½öÐèÒªÖØÐ¿¼ÂÇ×ÀÃæºÍÒÆ¶¯»·¾³ÖÐÒ³ÃæÏÔʾµÄÉè¼ÆÔªËØ, »¹Òª¿¼ÂÇÈçºÎ´ÓÒ»¸ö»·¾³Çл»µ½ÁíÒ»¸ö»·¾³.

Ê×ÏÈÀ´¿´×ÀÃæ¶ËµÄÀàDesktop(Ëü½«ÐèÒªÒ»¸öÊÊÅäÆ÷). Õâ¸öÀàʹÓÃÁËÒ»¸ö¼òµ¥µ«ºÜ¿íËɵĽӿÚ:

IFormat.php

<?php
interface IFormat
{
 public function formatCSS();
 public function formatGraphics();
 public function horizontalLayout();
}

ËüÖ§³ÖcssºÍͼƬѡÔñ, ²»¹ýÆäÖÐÒ»¸ö·½·¨Ö¸Ê¾Ò»ÖÖˮƽ²¼¾Ö, ÎÒÃÇÖªµÀÕâÖÖ²¼¾Ö²¢²»ÊÊÓÃСµÄÒÆ¶¯É豸.ÏÂÃæ¸ø³öʵÏÖÕâ¸ö½Ó¿ÚµÄDesktopÀà

Desktop.php

<?php
include_once('IFormat.php');
class Desktop implements IFormat
{
 public function formatCSS()
 {
  echo "ÒýÓÃdesktop.css<br />";
 }
 public function formatGraphics()
 {
  echo "ÒýÓÃdesktop.pngͼƬ<br />";
 }
 public function horizontalLayout()
 {
  echo '×ÀÃæ:ˮƽ²¼¾Ö';
 }
}

ÎÊÌâÀ´ÁË, Õâ¸ö²¼¾Ö¶ÔÓÚСµÄÒÆ¶¯É豸À´ËµÌ«¿íÁË. ËùÒÔÎÒÃǵÄÄ¿±êÊÇÈÔ²ÉÓÃͬÑùµÄÄÚÈÝ, µ«µ÷ÕûΪһÖÖÒÆ¶¯Éè¼Æ.

ÏÂÃæÀ´¿´Òƶ¯¶ËµÄÀàMobile

Ê×ÏÈÒÆ¶¯¶ËÓÐÒ»¸öÒÆ¶¯¶ËµÄ½Ó¿Ú

IMobileFormat

<?php
interface IMobileFormat
{
 public function formatCSS();
 public function formatGraphics();
 public function verticalLayout();
}

¿ÉÒÔ¿´µ½, IMobileFormat½Ó¿ÚºÍIFormat½Ó¿ÚÊDz»Ò»ÑùµÄ,Ò²¾ÍÊDz»¼æÈݵÄ, Ò»¸ö°üº¬ÁË·½·¨horizontalLayout(), ÁíÒ»¸ö°üº¬·½·¨verticalLaout(), ËüÃǵIJî±ðºÜС, ×îÖ÷ÒªµÄÇø±ðÊÇ: ×ÀÃæÉè¼Æ¿ÉÒÔ²ÉÓÃˮƽµÄ¶àÀ¸²¼¾Ö, ¶øÒƶ¯Éè¼ÆÒªÊ¹Óô¹Ö±²¼¾Ö,¶øÊÊÅäÆ÷¾ÍÊÇÒª½â¾öÕâ¸öÎÊÌâ

ÏÂÃæ¸ø³öÒ»¸öʵÏÖÁËIMoibleFormat½Ó¿ÚµÄMobileÀà

Mobile.php

<?php
include_once('IMobileFormat.php');
class Mobile implements IMobileFormat
{
 public function formatCSS()
 {
  echo "ÒýÓÃmobile.css<br />";
 }
 public function formatGraphics()
 {
  echo "ÒýÓÃmobile.pngͼƬ<br />";
 }
 public function verticalLayout()
 {
  echo 'ÒÆ¶¯¶Ë:´¹Ö±²¼¾Ö';
 }
}

MobileÀàºÍDesktopÀà·Ç³£ÏàËÆ, ²»¹ýÊÇͼƬºÍCSSÒýÓò»Í¬

½ÓÏÂÀ´,ÎÒÃÇÐèÒªÒ»¸öÊÊÅäÆ÷,½«DesktopºÍMobileÀà½áºÏÔÚÒ»Æð

MobileAdapter.php

<?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();
 }
}

¿ÉÒÔ¿´µ½,MobileAdapterʵÀý»¯Ê±ÒªÌṩһ¸öMobile¶ÔÏóʵÀý.»¹Òª×¢Òâ ,ÀàÐÍÌáʾÖÐʹÓÃÁËIMobileFormat, È·±£²ÎÊýÊÇÒ»¸öMobile¶ÔÏó.ÓÐÒâ˼µÄÊÇ, Adapter²ÎÓëÕßͨ¹ýʵÏÖhorizontalLayout()·½·¨À´°üº¬verticalLayout()·½·¨.ʵ¼ÊÉÏ, ËùÓÐMobileAdapter·½·¨¶¼°ü×°ÁËÒ»¸öMobile·½·¨.ÅöÇɵÄÊÇ, ÊÊÅäÆ÷²ÎÓëÕßÖеÄÒ»¸ö·½·¨²¢²»ÔÚÊÊÅäÆ÷½Ó¿ÚÖÐ(verticalLayout());ËüÃÇ¿ÉÄÜÍêÈ«²»Í¬, ÊÊÅäÆ÷Ö»ÊǰÑËüÃǰü×°ÔÚÊÊÅäÆ÷½Ó¿Ú(IFormat)µÄijһ·½·¨ÖÐ.

¿Í»§µ÷ÓÃ(Client)

Client.php

<?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();

ÊÊÅäÆ÷ģʽÖеÄClientÀà±ØÐë°ü×°Adaptee(Mobile)µÄÒ»¸öʵÀý, ÒԱ㼯³Éµ½Adapter±¾Éí.ʵÀý»¯Adapterʱ, ClientʹÓÃAdatee×÷Ϊ²ÎÊýÀ´Íê³ÉAdapterµÄʵÀý»¯.ËùÒÔ¿Í»§±ØÐëÊ×ÏÈ´´½¨Ò»¸öAdapter¶ÔÏó(new Mobile()), È»ºó´´½¨Ò»¸öAdapter((new MobileAdapter($this->mobile)).

ClientÀàµÄ´ó¶àÊýÇëÇó¶¼ÊÇͨ¹ýMobileAdapter·¢³öµÄ. ²»¹ýÕâ¸ö´úÂëµÄ×îºóËûʹÓÃÁËMobileÀàµÄʵÀý.

ÊÊÅäÆ÷ºÍ±ä»¯

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