In my recent Wizard Jam 4 entry "Clone-Ridden Fields" I wanted to implement a leaderboard system, but I didn't want to spend too much time developing it, and I find phpmyadmin super confusing so I went on a quest for another solution.
I happened across this site:
http://dreamlo.com/developer
Following the tutorial series linked below, I was able to get an online leaderboard in my game very very quickly. The tutorial uses Unity as an example, but the dreamlo site should work for just about anything.
I hope this helps people with their own projects. I imagine you could use it for non-leaderboard purposes but I don't know what kind of latency there is in the system. Rounds last about a minute in my game, and I've never had a dropped submission.
Happy deving!