Any way to check if user already voted with PHP?

Hi mate, first of all thanks for this great plugin, I’ve been searching for a light-weight one that just works.

I’d like to show a results box after the user votes. I could get and calculate the results fine, I can hide the voting form with js after voting(then it shows the results).

However, I’d like the results box stay on a later visit if the user already voted. Is there a way to check this with php? I just want to add in a simple if condition.

Or a simple css class would be enough too

Thank you in advance.

edit: I see in your code a function called ‘thumbs_rating_check’but I’m not sure if how can use this