Set up the base url in codeigniter

In Config.php

$config['base_url'] = 'http://localhost/Appsite/website/';
$config['index_page'] = '';

# If online site
# $config['base_url'] = 'http://stackoverflow.com/';

In .htaccess (outside application folder) - To remove index.php in URL

RewriteEngine on
RewriteCond $1 !^(index\.php|assets|image|resources|robots\.txt)
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?/$1 [L,QSA]

To accessing URL

<a href="<?php echo base_url();?>contollerName/methodName"> click here</a>

To access image

<img src="<?php echo base_url();?>images/images.PNG”>

To access CSS

<link rel="stylesheet" type="text/css" href="<?php echo base_url();?>assets/css/style.css"/>

To use base_url load URL helper from autoload.php

In your config.php set the base_url() as,

$config['base_url'] = 'http://localhost/projectname/';

In your view load the image as,

<img src="<?php echo base_url();?>images/images.PNG”>