職責(zé)鏈模式

職責(zé)鏈模式（又叫責(zé)任鏈模式）包含了一些命令對(duì)象和一些處理對(duì)象随夸，每個(gè)處理對(duì)象決定它能處理那些命令對(duì)象驻民，它也知道應(yīng)該把自己不能處理的命令對(duì)象交下一個(gè)處理對(duì)象附鸽，該模式還描述了往該鏈添加新的處理對(duì)象的方法弦撩。

Demo

<?php 
   /**
    * Created by PhpStorm.
    */ 

   //申請(qǐng)Model 
   class Request 
   { 
       //數(shù)量 
       public $num; 
       //申請(qǐng)類型 
       public $requestType; 
       //申請(qǐng)內(nèi)容 
       public $requestContent; 
   } 

   //抽象管理者 
   abstract class Manager 
   { 
       protected $name; 
       //管理者上級(jí) 
       protected $manager; 
       public function __construct($_name) 
       { 
           $this->name = $_name; 
       } 

       //設(shè)置管理者上級(jí) 
       public function SetHeader(Manager $_mana) 
       { 
           $this->manager = $_mana; 
       } 

       //申請(qǐng)請(qǐng)求 
       abstract public function Apply(Request $_req); 

   } 

   //經(jīng)理 
   class CommonManager extends Manager 
   { 
       public function __construct($_name) 
       { 
           parent::__construct($_name); 
       } 
       public function Apply(Request $_req) 
       { 
           if($_req->requestType=="請(qǐng)假"&& $_req->num<=2) 
           { 
               echo "{$this->name}:{$_req->requestContent} 數(shù)量{$_req->num}被批準(zhǔn)昨稼。<br/>"; 
           } 
           else 
           { 
               if(isset($this->manager)) 
               { 
                   $this->manager->Apply($_req); 
               } 
           } 

       } 
   } 

   //總監(jiān) 
   class MajorDomo extends Manager 
   { 
       public function __construct($_name) 
       { 
           parent::__construct($_name); 
       } 

       public function Apply(Request $_req) 
       { 
           if ($_req->requestType == "請(qǐng)假"&& $_req->num <= 5) 
           { 
               echo "{$this->name}:{$_req->requestContent} 數(shù)量{$_req->num}被批準(zhǔn)节视。<br/>"; 
           } 
           else 
           { 
               if (isset($this->manager)) 
               { 
                   $this->manager->Apply($_req); 
               } 
           } 

       } 
   } 


   //總經(jīng)理 
   class GeneralManager extends Manager 
   { 
       public function __construct($_name) 
       { 
           parent::__construct($_name); 
       } 

       public function Apply(Request $_req) 
       { 
           if ($_req->requestType == "請(qǐng)假") 
           { 
               echo "{$this->name}:{$_req->requestContent} 數(shù)量{$_req->num}被批準(zhǔn)。<br/>"; 
           } 
           else if($_req->requestType=="加薪"&& $_req->num <= 500) 
           { 
               echo "{$this->name}:{$_req->requestContent} 數(shù)量{$_req->num}被批準(zhǔn)假栓。<br/>"; 
           } 
           else if($_req->requestType=="加薪"&& $_req->num>500) 
           { 
               echo "{$this->name}:{$_req->requestContent} 數(shù)量{$_req->num}再說(shuō)吧寻行。<br/>"; 
           } 
       } 
   } 

$jingli = new CommonManager("李經(jīng)理"); 
$zongjian = new MajorDomo("郭總監(jiān)"); 
$zongjingli = new GeneralManager("孫總"); 

//設(shè)置直接上級(jí) 
$jingli->SetHeader($zongjian); 
$zongjian->SetHeader($zongjingli); 

//申請(qǐng) 
$req1 = new Request(); 
$req1->requestType = "請(qǐng)假"; 
$req1->requestContent = "小菜請(qǐng)假！"; 
$req1->num = 1; 
$jingli->Apply($req1); 

$req2 = new Request(); 
$req2->requestType = "請(qǐng)假"; 
$req2->requestContent = "小菜請(qǐng)假匾荆！"; 
$req2->num = 4; 
$jingli->Apply($req2); 

$req3 = new Request(); 
$req3->requestType = "加薪"; 
$req3->requestContent = "小菜請(qǐng)求加薪拌蜘！"; 
$req3->num = 500; 
$jingli->Apply($req3); 

$req4 = new Request(); 
$req4->requestType = "加薪"; 
$req4->requestContent = "小菜請(qǐng)求加薪！"; 
$req4->num = 1000; 
$jingli->Apply($req4); 

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