<?php

/*读入参数,以$con返回*/

$chipurl="chips/a.txt";

$fp=fopen($chipurl,'r+');

$content=fread($fp,100000);

echo $content;
?>
在win2000+apache下可以运行,为什么
到linux+apache,出现

Warning: fopen("chips/a.txt", "r+") - Permission denied in /usr/local/apache/htdocs/a/b.php on line 4

Warning: fread(): supplied argument is not a valid File-Handle resource in /usr/local/apache/htdocs/a/b.php on line 5

没有权限吗?
我是用root登录的