Create a folder using code igniter?

[eluser]JasonS[/eluser]
I can create files. But how do I create folder?

I need to create the following.

/root/cities/cityname/
/root/cities/cityname/images/

I have had a look at the file helper class but cannot see how I can use it to create folder. Does codeigniter have a built in function for this?

How would I edit and delete there folders along with their content.

[eluser]wiredesignz[/eluser]
mkdir to create a directory (only windows uses folders)

delete a directory and contents
http://www.ozzu.com/programming-forum/ph...47492.html