Untitled

<style>
body{
    background-color: #fa6cff;
}
</style>
<?php
//On request compare usernames and passwords in database to username and password variables'
if(ISSET($_POST['LOGIN'])){
    if(!empty($_POST['uname']))[{
        if(!empty($_POST['password']))[{
            $username = $_POST['uname'];
            $password = $_POST['password'];
            $query = 'SELECT * FROM `user`';
            $conn = mysqli_connect('localhost', 'root', '', 'mygame') or DIE('BAD CONNECTION, TRY AGAIN');
            $result = mysqli_query($conn, $query) or DIE('BAD QUERY, TRY AGAIN');
            $msg = NULL;
                while($row = mysqli_fetch_array($result)){
                $username_db = $row['uname'];
                $password_db = $row ['password']
                $email_db = $row['email'];
                $id = $row['user_id'];
                $full_name_db = $row['fname'];
            }
        }
    }
}
?>
<html>
<body>
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
    <h2> Login </h2>
    <p> Username : </p> <input type = 'text' name = 'uname'> <br>
    <p> Password </p> <input type = 'password' name = 'password'> <br> <br>
    <input type = 'submit' name ='LOGIN' value = 'Login'>
</form>
</body>
</html>
<?php
if (ISSET($_POST['Login'])){
    echo $msg;
}
?>