About PHP's loading class operation and the application of other magic methods

<?php 
加载类
//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();

自动加载类
//1.所有类文件名和类名要保持一致
//2.所有类文件放在同一文件下
//3.所有类文件命名规则一致
function __autoload($cname){
    require_once("./$cname.class.php");    
}
$t = new test();
$t->ceshi().&#39;<br>&#39;;
$s = new Ren();
$s->test();

Two magic methods
##

 class Ren{
    public $name;
    public function say(){
        echo "输出对象方法";    
    }
    //输出对象的方法
    public function __tostring(){
        echo "另一种输出方法";    //echo $s->__tostring();
        return "另一种输出方法";//echo $s;
    }
    //克隆对象的方法
    public function __clone(){
        $this->name = "Riven";//$this代表复本（克隆的对象）
    }
} 
$s = new Ren();
//echo $s->__tostring();//输出字符串
//$s->say();
$s->name = "小V";
var_dump($s);
$s1 = clone $s;
var_dump($s1);
?>

The above is the detailed content of About PHP's loading class operation and the application of other magic methods. For more information, please follow other related articles on the PHP Chinese website!