On 1/03/2011, at 4:51 AM, Yang Yang wrote: > hi,every > > i have a php project and use centos to go > > and how to make folder's privilage and make it saft > > like: /home/htdocs/test > > chown -R www:www /home/htdocs/test > > chmod -R 644 /home/htdocs/test Almost correct, but directories also need the 'execute' permission. 644 for files, 755 for directories. chmod 755 /home/htdocs/test/ You seem new to this, so I should also point you to the following, which will give you a good head-start. http://phpsec.org/projects/guide/ http://www.owasp.org/index.php/Main_Page and this is a tutorial for PHP in a Chinese context, although on a Windows platform. http://www.herongyang.com/PHP-Chinese/ 再见！ 胡鑫