PHP and your files
PHP is like a secretary.
I’m really liking these analogies I’m using (yeah, I’m weird that way). Anyway, as I was saying… PHP has the ability to interact with your file system. It means that PHP can write and reads into any file in your directories and files that are on your local hard disk (or other computers if they’re in a network). Aside from that, if a file doesn’t exist, PHP can create that file, directories, and copy files. It can also rename and/or delete files and change their attributes. If you want to create a back-up then PHP can do it for you.