MINI

files >> C:/xampp/htdocs/polling_rt/submit_vote.php

 <?php
session_start(); include "config.php";
if(!isset($_SESSION['nik'])){ header("Location:index.php"); exit; }

$nik = $_SESSION['nik'];
$id = $_POST['id'];

mysqli_query($conn,"INSERT INTO votes(nik,candidate_id) VALUES('$nik','$id')");
mysqli_query($conn,"UPDATE voters SET has_voted=1 WHERE nik='$nik'");

header("Location: vote.php");
?>