Adding a certain image to a dir

[arenlor]

For a script I'm making it mkdir(blah), and what I want to do is create a favicon.ico in each dir, the same ico, which I already have, in the same dir as the mkdir() script. I know how to write text based files in it, but have no idea how to write an image file into it using the script. Any help is appreciated ^_^ (I don't know how to use a BLOB in mysql so if you suggest using that you'll have to explain how)