I created a website using CodeIgniter Framework 2.1.0 that was originally working well. Yesterday, I integrated this i18n code into the site for multi-language support.
Now, when I upload my site to cpanel and open it, I get this error in my log file:
[21-Nov-2011 10:19:04] PHP Fatal error: Call to undefined method CI_Lang::lang() in XXXX
However, the website is working well on my localhost server (xampp for Windows). What’s wrong?
See the thread attached to the library: http://web.archive.org/web/20120112092127/http://codeigniter.com/forums/viewthread/179036. In the first post is attached a modified library that claims to alleviate the buggyness of the original.
There is also a post on the first page there referencing an error similar to yours:
Though he seems to be calling CI_Lang, not Lang. His solution appears to have been to use the code attached to the forum thread.
Also, cpanel is a control panel for hosting, not a hosting provider. But your hosting provider may be causing issues (e.g. if using older versions of PHP which do not work with newer version of CI. Often hosting providers will give you the ability to choose which version of PHP you are using–usually found in cPanel).