详细解读PHP中接口的应用

interface IPillage
{
 function emptyBakAount();
 function burnDocument();
}

class Executive extends Employee implements IPillage
{
 private $totalStockOptions;
 function emptyBankAount()
 {
  echo "Call CFO and ask to transfer funds to Swiss bank aount.";
 }
 function burnDocuments()
 {
  echo "Torch the office suite.";
 }
}

class Assistant extends Employee implements IPillage
{
 function takeMome()
 {
  echo "Taking memo...";
 }
 function emptyBankAount()
 {
  echo "Go on shopping spree with office credit card.";
 }
 function burnDocuments()
 {
  echo "Start small fire in the trash can.";
 }
}

<?php
 interface IEmployee{...}
 interface IDeveloper{...}
 interface IPillage{...}
 class Employee implements IEmployee,IDeveloper,iPillage {
 ...
 }
 class Contractor implements IEmployee,IDeveloper {
 ...
 }
?>

 <?php 
  
 / 
   声明接口Demo 
   @author wzy 
   
  / 
 interface Demo 
 { 
  
  const NAME = "wangzhengyi"; 
  
  const AGE = 25; 
  
  function fun1 (); // 声明方法默认是public abstract 
  function fun2 (); 
 } 
  
 / 
   声明接口的继承Demo2 
   
   @author wzy 
     
  / 
 interface Demo2 extends Demo 
 { 
  
  function fun3 (); 
  
  function fun4 (); 
 } 
  
 / 
   声明接口Demo3 
   
   @author wzy 
     
  / 
 interface Demo3 
 { 
  
  function fun5 (); 
  
  function fun6 (); 
 } 
  
 / 
   声明父类ParentClass 
   
   @author wzy 
     
  / 
 class ParentClass 
 { 
  
  function fun7 (); 
 } 
  
 / 
   子类必须实现接口中所有的方法 
   
   @author wzy 
     
  / 
 class ChildClass extends ParentClass implements Demo2, Demo3 
 { 
  
  function fun1 (); 
  
  function fun2 (); 
  
  function fun3 (); 
  
  function fun4 (); 
  
  function fun5 (); 
  
  function fun6 (); 
 }