I have a directory structure that looks like this:

/expandables 
- folder
- folder
- folder
- folder 
  - BannerInfo.txt
  - index.html

Each one of the folder has the same exact stucture. One file named BannerInfo.txt and index.html. There are about 250 of these folders if that matters.

I want to loop through these folders and store each of the index.html files into an array. Inside of the index.html file is just some simple HTML and Javascript of which I want to read into a string to be displayed later on.

I'm struggling with how to filter out only the index.html file from the individual folders.

The purpose of this is because I want to randomly select an index.html file and put the contents into a textarea. I thought I could do a simple array_rand() on the returned array and spit out the string.

Any ideas?