How to remove 'index.php' from URL in Codeigniter?

Step 1 :

Make some changes in config.php file Go to “your-project-or-domain/application/config/config.php”
 You will find there below code.

$config['index_page'] = 'index.php';
//Replace above code with below code
$config['index_page'] = '';

Add following rules in your .htaccess file on root directory.

RewriteEngine on
RewriteBase /your-project-directory-name/
RewriteCond $1 !^(index.php|resources|robots.txt)
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L,QSA]

It’s done but If you face still there is an issue then you need to change one more configuration in config.php file.
 You need to find below code

$config['uri_protocol'] = 'AUTO'; 
//Replace above code with below code
$config['uri_protocol'] = 'REQUEST_URI';