---html
  ----gnuboard4-_common.php
  ----index.html

상위의 디렉토리를 구조를 가지고 있습니다.

구래도 에러가 나는데...참 이해가 않되네요

_common.php(gnuboard4아래-_common.php)
=================================
<?
$g4_path = "./gnuboard4"; // common.php 의 상대 경로
include_once("$g4_path/common.php");
?>

index.html(-html아래 index.html)
============================
<?
$g4_path="./gnuboard4";
include_once("$g4_path/_common.php");
include_once("$g4[path]/lib/latest.lib.php");
?>

아래와 같이 에러가 http://www.abc.co.kr/gnuboard4/에서 나네요 답변 좀 부탁드려요?

Warning: include_once(./gnuboard4/common.php) [function.include-once]: failed to open stream: No such file or directory in /web/home/vovo/html/gnuboard4/_common.php on line 3

Warning: include_once() [function.include]: Failed opening './gnuboard4/common.php' for inclusion (include_path='.:/usr/lib/php/pear') in /web/home/vovo/html/gnuboard4/_common.php on line 3

Warning: include_once(/lib/latest.lib.php) [function.include-once]: failed to open stream: No such file or directory in /web/home/vovo/html/gnuboard4/index.php on line 3

Warning: include_once() [function.include]: Failed opening '/lib/latest.lib.php' for inclusion (include_path='.:/usr/lib/php/pear') in /web/home/vovo/html/gnuboard4/index.php on line 3