Current Site URL – Codeigniter

To get host url of current server simply replace

application\config\config.php

$config['base_url'] = '';

with

// Home URL
$sysurl = ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == "on") ? "https" : "http");
$sysurl .= "://" . $_SERVER['HTTP_HOST'];
$sysurl .= str_replace(basename($_SERVER['SCRIPT_NAME']), "", $_SERVER['SCRIPT_NAME']);

$config['base_url'] = $sysurl;