Menghilangkan index.php di url Codeigniter

penggunaan index.php pada URL ketika menggunakan codeigniter sangat mengganggu pandangan. Misal, ketika ingin mengakses controller "home", maka sebelum nama controller tersebut harus disertakan index.php, sehingga menjadi index.php/home.
cara menghilangkannya yaitu :
1. buat file .htaccess di top folder ci,
2. copy paste script berikut :


RewriteEngine On
RewriteBase /
#Removes access to the system folder by users.
#Additionally this will allow you to create a System.php controller,
#previously this would not have been possible.
#’system’ can be replaced if you have renamed your system folder.
RewriteCond %{REQUEST_URI} ^system.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#When your application folder isn’t in the system folder
#This snippet prevents user access to the application folder
#Submitted by: Fabdrol
#Rename ‘application’ to your applications folder name.
RewriteCond %{REQUEST_URI} ^application.*
RewriteRule ^(.*)$ /index.php?/$1 [L]
#Checks to see if the user is attempting to access a valid file, 
#such as an image or css document, if this isn’t true it sends the 
#request to index.php 
RewriteCond %{REQUEST_FILENAME} !-f 
RewriteCond %{REQUEST_FILENAME} !-d 
RewriteRule ^(.*)$ index.php?/$1 [L] 
# If we don’t have mod_rewrite installed, all 404′s 
# can be sent to index.php, and everything works as normal. 
ErrorDocument 404 /index.php 

3.Pada bagian RewriteBase sesuaikan dengan nama folder masing-masing.
4. test di browser, misal kita ingin mengakses controller home yang biasanya http://namaweb/index.php/home menjadi http://namaweb/home

selesai.
Good Luck!