關(guān)于PHP的加載類操作以及其他兩種魔術(shù)辦法應(yīng)用

<?php

加載類

//include("./Ren.class.php");

//include "./Ren.class.php";

include_once("./Ren.class.php");

include_once("./Ren.class.php");

$f = new Ren();

$f->test();

require("./Ren.class.php");

require_once("./Ren.class.php");

require_once "./Ren.class.php";

$f = new Ren();

$f->test();

主動(dòng)加載類

//1.所有類文件名和類名要堅(jiān)持一致

//2.所有類文件放在統(tǒng)一文件下

//3.所有類文件定名規(guī)則一致

function __autoload($cname){

require_once("./$cname.class.php");

}

$t = new test();

$t->ceshi().'<br>';

$s = new Ren();

$s->test();

兩種魔術(shù)辦法

class Ren{

public $name;

public function say(){

echo "輸出對(duì)象辦法";

}

//輸出對(duì)象的辦法

public function __tostring(){

echo "另一種輸出辦法"; //echo $s->__tostring();

return "另一種輸出辦法";//echo $s;

}

//克隆對(duì)象的辦法

public function __clone(){

$this->name = "Riven";//$this代表復(fù)本(克隆的工具)

}

}

$s = new Ren();

//echo $s->__tostring();//輸入字符串

//$s->say();

$s->name = "小V";

var_dump($s);

$s1 = clone $s;

var_dump($s1);

必修>