PHP function wordpress integration

Hello, I'm creating a public listing website where users can add their own listings and visitor can vote for each listing. I need some help to configure the vote system, here is the features that must be functional : - The vote button must be specific for each item on my listing. - A visitor can only vote once each 3 hours (configurable) - A visitor can't be able to vote multiple time in an interval (IP adress check for example) - The visitor should be able to add an username that will be use later in a function - The vote button must be able to execute php or javascript function when clicking on it (if the time interval and user check is valid). Otherwise, it should not work At this time, i'm using the Wordpress plugin named "Like Button Rating" that can do every features listed above. But i'm actually struggling with the last 2 features : - I need to add a function that send an information to a protocol - I need to add some args on this function like username, service name, private api key I've got every php function that can be found here (Implementing NuVotifier in a server list) : - [login to view URL] And i've also got some example from LikeButton Plugin that tells us how to execute function when someone vote with the button : - [login to view URL] So now i just need that : - A user can enter an username that will be used as an args on a function when voting - An API key will be specific for each listed item and need to be add when submit a listing I'm using ListingPro theme. I hope someone could help me. Florent