隐藏index.php后获取不到$_server['PATH_INFO']变量

隐藏index.php后获取不到$_server['PATH_INFO']变量,http://fong.com/a/index这样访问不到$_server['PATH_INFO'],如果这样http://fong.com/index.php/a/index就可以,是我的配置有问题吗

http://www.openkee.com/post-152.html