17. 潜藏的问题 实际上,负责首页的A君不仅仅只调用一个相册功能,通常还调用C君的User.php和D君的Feed.php… Index.php<?php Include (‘Model/Photo.php’); $photo = new Photo(); $photo->getList(…); Include (‘Model/User.php’); $user = new User(); $user->get(‘Name’); Include (‘Model/Feed.php’); $feed= new Feed(); $feed>getList(…); Include (‘Model/Diaryphp’); $diary= new Diary(); $diary>getList(…); …