Question

In config.php

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

In View

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

=> Error: Call to undefined function base_url(); Help me

Answer 1

To use base_url() (shorthand), you have to load the URL Helper first

$this->load->helper('url');

Or you can autoload it by changing application/config/autoload.php

Or just use

$this->config->base_url();

Same applies to site_url().

Also I can see you are missing echo (though its not your current problem), use the code below to solve the problem

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