set_include_path和get_include_path用法详解

set_include_path(".".PATH_SEPARATOR.ROOT."/lib".PATH_SEPARATOR.ROOT."/core".PATH_SEPARATOR.ROOT."/configs".PATH_SEPARATOR.get_include_path());
require_once 'mysql.func.php';
require_once 'image.func.php';
require_once 'common.func.php';
require_once 'string.func.php';
require_once 'page.func.php';
require_once "configs.php";
require_once 'admin.inc.php';
require_once 'cate.inc.php';
require_once 'pro.inc.php';
require_once 'album.inc.php';
require_once 'upload.func.php';
require_once 'user.inc.php';

zendframework的示例index.php里有这样一句

set_include_path('.' . PATH_SEPARATOR . '../library/'. PATH_SEPARATOR . './application/models/'. PATH_SEPARATOR . './application/lib/'. PATH_SEPARATOR . get_include_path());

参考地址：http://www.jianshu.com/p/303feaaeded1