What does this line mean? Pulse voting script

Saturday, May 3, 2014

I'm working on adding a reddit-style voting capability to my website and I am trying to use this Pulse Votes script. In their installation guide it says:

  • Include Pulse.vote.class.php to the file(s) where you want to show pulse. Create and instance of Pulse. include("Pulse/Pulse.vote.class.php"); $pulse = new Pulse();

What does this mean? Where do I put this code? I tried putting it in my index.html but that obviously doesn't work, it just shows up as plain text on my screen. Do I put it in my index.php file? If so, where do I put it? I really don't understand this step.