I'm trying to install an application made with codeIgniter in a subfolder, so that I can access it using : http://www.domain.com/my_subfolder/ At the root, there's a Wordpress application. I edited the .htaccess of the Wordpress install to let the request go to the folder /my_subfolder/
It's working fine, the only problem I get is that CodeIgniter is unable to dynamically load the classes in the "libraries" directory. So everything in the CI application works fine until it tries to use an object declared in the "libraries" subfolder, then I get a : Unable to load the requested class: my_class
It doesn't seems that there's a parameter in the "config" folder to change that... any idea?
What you need is to edit your CodeIgniter config.php in System > application > config.
and then edit config.php and set the property:
$config['base_url'] = "http://www.domain.com/my_subfolder/"
Well it seems that the config param base_url should be updated. Also, I used a library with the "MY_" prefix, and I should'nt since I was'nt extending any CI class.
来源：https://stackoverflow.com/questions/2197119/installing-a-codeigniter-application-in-a-subfolder