Home Backend Development PHP Tutorial 关于类继承函数重载的有关问题?大神进

关于类继承函数重载的有关问题?大神进

Jun 13, 2016 pm 01:10 PM
class function parent select this

关于类继承函数重载的问题?大神进

PHP code
<!--

Code highlighting produced by Actipro CodeHighlighter (freeware)
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-->
class a
{
function a()
{
...
}

function select()
{
...
}
}

class b extends a
{
function b()
{
...
}
function select()
{
//这里能调用a类的select函数,但是我的感觉好像写法不规范,老感觉会死循环..
$this->select();

//是不是有别的写法

//这写法 $a = new a(); $a->select();是不是比较耗内存,重新定义了一个对象)
}
}

Copy after login


------解决方案--------------------
只能这样写
parent::select();

$this->select();
这样写就是递归了
除非你确有需要,不然就锁死了
------解决方案--------------------
$this代表的本身,如果想调用你类的话,就用parent::,你这样写是重写了自己.
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