工程目錄如下：

1、將需要注冊(cè)的類放在一個(gè)數(shù)組中

<?phpfinal class Utils {     private function __construct() {     }     public static function getClasses($pre_path = '/') {        $classes = array(                'DBConfig' => $pre_path.'DBConfig/DBConfig.php',                'User' => $pre_path.'Model/User.php',                'Dao' => $pre_path.'Dao/Dao.php',                'UserDao' => $pre_path.'Dao/UserDao.php',                'UserMapper' => $pre_path.'Mapping/UserMapper.php',        );        return $classes;    }}?>

2、注冊(cè)數(shù)組

注意：步驟1中的類的路徑都是相對(duì)于init.php而言的，不是相對(duì)于Utils而言的，這是因?yàn)槲覀兺ㄟ^init.php里的自動(dòng)加載函數(shù)spl_autoload_register來(lái)require類的

<?phprequire_once '/Utils/Utils.php';final class Init {         /**     * System config.     */    public function init() {        // error reporting - all errors for development (ensure you have        // display_errors = On in your php.ini file)        error_reporting ( E_ALL | E_STRICT );        mb_internal_encoding ( 'UTF-8' );        //registe classes        spl_autoload_register ( array ($this,'loadClass' ) );    }         /**     * Class loader.     */    public function loadClass($name) {        $classes = Utils::getClasses ();        if (! array_key_exists ( $name, $classes )) {            die ( 'Class "' . $name . '" not found.' );        }        require_once $classes [$name];    }}$init = new Init ();$init->init ();?>

3、本例中在使用處test.php里require init.php

<?phprequire_once 'Init.php'; $dao = new UserDao();$result = $dao->findByName('zcl');?>