Account Info Panel (Supporting PHP)

<?php

    $server_host = "localhost";
    $server_username = "monstahhh";
    $server_password = "";
    $server_db = "monstahhh";

    $conn = new mysqli($server_host, $server_username, $server_password, $server_db;

    if (!$conn)
    {
        echo "Could not connect to Database.";
    } else
    {

        $userIDPost = mysqli_real_escape_string($conn, $_POST['userIDPost']);
        $hashPost = mysqli_real_escape_string($conn, $_POST['hashPost']);

        $key = "grgorogkrogkorkg";
        $kys = $userIDPost . $key;
        $hash = hash("sha512", $kys);

        if ($hashPost == $hash)
        {
            $selectSQL = "SELECT * FROM scores WHERE uniqueID='".$userIDPost."'";
            $selectResult = mysqli_query($conn, $selectSQL);

            while($row = mysqli_fetch_assoc($selectResult))
            {
                echo $row['name'] . "," . $row['score'];
            } else
            {
                echo "Failed to find row. Please report this to Sigma Studios.";
            }
        } else
        {
            echo "Hash Not Valid.";
        }
    }
?>