Changing the Filename of a File Downloaded over a PHP Script

You may be downloading files on your server with PHP by a combination of the header() and readfile() functions, like so...

header("Content-disposition: attachment;filename=MyFileName.txt");
readfile("../data/MyFileName.txt");

The filename on the server, and the one the user sees, will both have the same name. But you can change the filename the user sees, with something like this...

header("Content-disposition: attachment;filename=MyUSERONLYFileName.txt");
readfile("../data/MyFileName.txt");

Your server knows to look for the file in ../data/MyFileName.txt, and now, your user will receive a file with teh name of MyUSERONLYFilename.txt, instead of MyFileName.txt.