Browser - Send data as a POST

After a game is over, I delay 3 seconds and send it to a page on my server, game_over.php. Works great, but I would like to send some post data to that page.

I am using browser -> go to URL. Is there a way to do this. I dont like putting it GET form because people can read the data being sent.

Thanks

you can use AJAX for doing that hiddenly. Make sure to add Cross Origin at your php header script.