How to call web from sub folder

Hi folks
Please help me to configure my web on sub folder.

My web work good from main domain folder like http://www.mydomain.com
But when I call from http://www.mydomain.com/en/index.php - home page is ok, but next pages (http://www.mydomain.com/en/post/more/2015/01/09/126) could not open.
it gives me "404 Page not found " error page.

Also "http://www.mydomain.com/post/more/2015/01/09/126" , (from main folder) its could open.

We are developing PHP with Codegnator framework.