Remove indix.php in Codeigniter URL

To do this just follows the following steps:

1. Open config.php from system/application/config directory and replace
   $config['index_page'] = “index.php” by $config['index_page'] = “”
2. Create a “.htaccess” file in the root of CodeIgniter directory (where the system directory resides), open the file using your favorite text editor, write down the following script and save it:
   RewriteEngine on
   RewriteCond $1 !^(index\.php|resources|robots\.txt)
   RewriteCond %{REQUEST_FILENAME} !-f
   RewriteCond %{REQUEST_FILENAME} !-d
   RewriteRule ^(.*)$ index.php/$1 [L,QSA]
3. In some case the default setting for uri_protocol does not work properly. To solve this problem just replace
   $config['uri_protocol'] = “AUTO” by $config['uri_protocol'] = “REQUEST_URI” from system/application/config/config.php