php设计模式之职责链模式定义与用法经典示例

本文实例讲述了php设计模式之职责链模式定义与用法。分享给大家供大家参考，具体如下：

name = $name;
    $this->department = $department;
    $this->days = $days;
  }
}
//创建抽象管理者类
abstract class manager{
  public $manager;//设置管理者上级
  public function __construct($name){
    $this->name = $name;
  }
  //设置处理申请的上级管理对象
  public function setHeader(manager $manager){
    $this->manager = $manager;
  }
  //请假申请处理方法
  abstract public function apply(staff $staff);
}
//项目经理请假申请处理类
class charge extends manager{
  public $name;//管理者姓名
  public function __construct($name){
    parent::__construct($name);
  }
  
  public function apply(staff $staff){
    if($staff->days<=1){
      echo "{$staff->department}的{$staff->name}你的请假已批准，审批天数{$staff->days},审核人项目主管：{$this->name}".PHP_EOL;
    }else{
      $this->manager->apply($staff);
    }
  }
}

class projectManager extends manager{
  public function __construct($name){
    parent::__construct($name);
  }
  
  public function apply(staff $staff){
    if($staff->days<=3){
      echo "{$staff->department}的{$staff->name}你的请假已批准，审批天数{$staff->days},审核人项目经理：{$this->name}".PHP_EOL;
    }else{
      $this->manager->apply($staff);
    }
  }
}

class boss extends manager{
  public function __construct($name){
    parent::__construct($name);
  }
  
  public function apply(staff $staff){
    if($staff->days>3 && $staff->days<=5 ){
      echo "{$staff->department}的{$staff->name}你的请假已批准，审批天数{$staff->days},审核人ceo：{$this->name}".PHP_EOL;
    }else{
      echo "{$staff->department}的{$staff->name}你的请假天数过长，未批准，审批人ceo：{$this->name}".PHP_EOL;
    }
  }
}
//实例化管理者类
$manager = new charge("尹志平");
$projectManager = new projectManager("令狐冲");
$boss = new boss("风清扬");
//设置管理类的上次管理对象实例
$manager->setHeader($projectManager);
$projectManager->setHeader($boss);
//申请请假1天
$staff = new staff('刘德华', '技术部', 1);
$manager->apply($staff);
//申请请假3天
$staff = new staff('周润发', '技术部', 2);
$manager->apply($staff);
//申请请假5天
$staff = new staff('张学友', '技术部', 5);
$manager->apply($staff);
//申请请假7天
$staff = new staff('刘亦菲', '技术部', 7);
$manager->apply($staff);

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希望本文所述对大家PHP程序设计有所帮助。