Can you please write your problem/details/folder structures etc. step by step. So that we can figure it out correctly instead of hitting our head against a brick wall.
For example You mentioned that :
"i checked capital letter at starting." in your first post. Did you check the First letters of Model names and Controller names in your related directories?
Or your index function starts with an
if(isset()).. What about the
else part of the block?
By the way, before everything, can you please try any, simple,
"hello world" text to test the welcome page?
Regards.
