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php类中 self与$this的详解 - 站长搜索
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php类中 self与$this的详解

PHP 2014-12-17 08:15:05 转载来源: 网络整理/侵权必删

本文为大家讲解的是php类中 self与$this的详解,感兴趣的同学参考下。 先谈parent与self: <?php /*  * Created by YinYiNiao  */  class A{   function __construct(){    echo "基类A的构造方法<br />";   }  }  class B extends A{   function __construct(){    parent::__construct();    echo "子类B的构造方法<br />";    self::myFun();   }   function myfun(){ &nb

本文为大家讲解的是php类中 self与$this详解,感兴趣的同学参考下。


先谈parent与self:


<?php
/*
 * Created by YinYiNiao
 */
 class A{
  function __construct(){
   echo "基类A的构造方法<br />";
  }
 }
 class B extends A{
  function __construct(){
   parent::__construct();
   echo "子类B的构造方法<br />";
   self::myFun();
  }
  function myfun(){
   echo "一个普通方法myFun()<br />";
  }
 }
$obj=new A();
$obj=new B();
?>


self与$this的功能极其相似,但二者又不相同。$this不能引用静态成员和常量。self更像类本事,而$this更像是实例本身。


标签: php 类中 self this 详解


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