programming:2 - finding hidden directories
As you can see this challenge requires you to find a file in a directory, now ofcourse you could do it the time consuming way and keep trying until you find the directory, or do it smarter, and write a program that attempts to find the file.

Alright, as you can see there's a folder called adminxxx, the three x's stand for numbers or alphanumeric characters, this means you'll have to code something that will automatically generate a folder with the following name admin[a-zA-Z0-9]{3}, this is the easiest part.

Once you have coded a script that generates this string, it's time to make a connection and see if the particular file actually exists, there are several php functions that are able to do this, I personally used fsockopen to beat this one.

Have fun!