config['base_url']</span></code> is not set, CodeIgniter tries to automatically
detect what your website’s base URL is. This is done purely for convenience
when you are starting development of a new application.</p>
<p>Auto-detection is never reliable and also has security implications, which
is why you should <strong>always</strong> have it manually configured!</p>
<p>One of the changes in CodeIgniter 3.0.3 is how this auto-detection works,
and more specifically it now falls back to the server’s IP add