I do want to make my own, sometimes I don't want to take others peoples stuff and just modify it. Besides, this is a rating system, like you rate users at YouTube with the negative and positive ratings.
VillageIdiot can have my babbies ;d
The PHP is obviously very straight forward, it's just handling POST data.
But what I recommend to you and to anyone else who wishes to create their own versions of things like this, take a look at what's out there.
Just because you want to make your own, doesn't mean you shouldn't take a peak and see how everyone else did it.
It's great to learn from trying it yourself, but if you haven't the slightest idea on where to start, that should give you a good footing.
The basics of how this works:
You can split them up into single stars, or half stars. Or you can use bars or whatever.
Basically, you have an array of all stars, wherever the user puts their mouseover, you count how many are below it, and switch them 'on'. And just undo that action for turning them off. You will need to save the original state for easy resets. onclick for any of them will kick off the Ajax wrapper, which sends post, comes back, and lets you know it was saved. and then lock the stars.