set up multiple applications

Are there any reason you need to do it like that? Because that just look like you are going to dig a big hole in the ground and never get out of it.

I would recommend setting up virtual hosts (multiple domains) and send environment variables from apache into CI. And change your application directory path. So you can access it normally.

Hi,
I found the solution to my problem.
The main problem was that I had two index.php (one in code_igniter directory and one in each application directory) and I modified the bad one (the one in code_igniter directory).
I used virtuel hosts, as you adviced to me to do, to shorten my urls

Thank you for your help.

Frederic