Now it's time to learn how to destroy (delete) files.
In PHP you delete files by calling the unlink function.
If you unlink a file, you are effectively causing the system to forget about it or delete it
Before you can delete (unlink) a file, you must first be sure that it is not open in your program.
function to close down an open file.
Now to delete a file "unlink" just needs to know the path and name of the file to delete it.
The testFile.txt should now be removed.
Remember that you can get messed up.
When you are performing the unlink function be sure that you are deleting the right file
For more detail please see Php Manual at http://www.php.net