Untitled

<?php include "includes/db.php"; ?>

<?php session_start(); ?>

<?php

 if(isset($_POST['submit'])) {

    global $connection;

    echo $username = $_POST['username'];
    echo $password = $_POST['password'];

    $query = "SELECT * FROM users WHERE username = '$username', password = '$password'";

    $result = mysqli_query($connection, $query);

    $row = mysqli_fetch_assoc($result);

    $_SESSION['userid'] = $row['userid'];
    $_SESSION['username'] = $row['username'];

}
?>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>The Akashic Vault</title>
    <link rel="stylesheet" href="styles/mainstyle.css" class="css">
</head>
<body>

  <div class="headerContent">

      <div class="topmenu">

         <img src="images/logo.png" alt="" style="margin: 6px;">

          <form action="index.php" method="post">

             <input type="text" name="username" class="topinput" value="Username">

             <input type="password" name="password" class="topinput" value="Password">

             <input type="submit" class="inputbtn" name"submit" value="Login">


          </form>

      </div>

  </div>


</body>
</html>