How to remove index.php from Codeigniter URL?

I would like to explain about removing index.php from codeigniter based application urls with .htaccess.To hide “index.php” from the URL, add an .htaccess file to your web root, with following text:

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

NOTE: If you are website located in sub directory , instead of 'RewriteBase / ‘ add ‘RewriteBase /sub directory name ‘.For example if you webiste located in htdocs/ciapp/ then the rule should be RewriteBase /ciapp.

After add .htaccess file go to applications/config/ open config.php, in the config array, remove index_page value

 $config['index_page'] = “index.php”;
 //to
$config['index_page'] = “”;

In some cases default settings of uri_protocol doesn’t work properly.To fix this problem just change below code in config.php located at application/config/ directory

$config['uri_protocol'] = “AUTO” 
//with 
$config['uri_protocol'] = “REQUEST_URI”;

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