PHP CI（CodeIgniter） 如何去掉url中的index.php

#LoadModule rewrite_module modules/mod_rewrite.so

[code]AllowOverride All
[/code]
2、在CI的根目录下，建立.htaccess文件，文件内容如下
RewriteEngine On

RewriteCond %{REQUEST_URI} ^system.*
RewriteRule ^(.*)$ /index.php?/$1 [L]

RewriteCond %{REQUEST_URI} ^application.*
RewriteRule ^(.*)$ /index.php?/$1 [L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L]

3、打开文件application/config/config.php，$config['index_page'] = "index.php";改为$config['index_page'] = ""; 
$config['index_page'] = "";

4、重启Apache