自动加载对象的流程

<?php

// require ‘Test1.php‘;
// require ‘Test2.php‘;

new Test2();

function __autoload($class) {
    require __DIR__.‘/‘.$class.‘.php‘;
    echo($class);
}

 ?>

<?php
// namespace Test2;

class Test2 {
    public function __construct() {
        echo __FILE__;
    }

    public function __destruct() {
        echo ‘结束了‘;
    }
}

 ?>