Let the World See the Carnage – Saving and Loading High Scores - Unity 4 Game Development - page 593

At last, you can put the HiScore.php file on your web hosting service. Then, you will
need to change phpUrl in the UIHiscore script to your web hosting.
Note
For more information on how to set up MySQL database on your website, you can go to
the following link and download the file: http://www.webwisesage.com/addons/
free_ebook.html .
There is also a video tutorial of how to set up the MySQL database, PHP, and Flash by
Lee Brimelow; just check out the MySQL and PHP parts. You can find it at the following
link: http://www.gotoandlearn.com/play.php?id=20 .