Tu Vi base 64

<?php
$conn = mysql_connect("localhost", "root", "") or die("can't connect this database");
mysql_select_db("u727529355_tuvi", $conn);
$sql    = "SELECT * FROM TuVi ORDER BY id DESC LIMIT 1";
$result = mysql_query($sql);

$response["detail"] = array();
while ($row = mysql_fetch_array($result)) {

    $kq["id"]        = base64_encode($row["id"]);
    $kq["date"]      = base64_encode($row["date"]);
    $kq["noibat"]    = base64_encode($row["noibat"]);
    $kq["Bachduong"] = base64_encode($row["Bachduong"]);
    $kq["Kimnguu"]   = base64_encode($row["Kimnguu"]);
    $kq["Bachduong"] = base64_encode($row["Bachduong"]);
    $kq["Kimnguu"]   = base64_encode($row["Kimnguu"]);
    $kq["Songtu"]    = base64_encode($row["Songtu"]);
    $kq["Cugiai"]    = base64_encode($row["Cugiai"]);
    $kq["Sutu"]      = base64_encode($row["Sutu"]);
    $kq["Xunu"]      = base64_encode($row["Xunu"]);
    $kq["Thienbinh"] = base64_encode($row["Thienbinh"]);
    $kq["Bocap"]     = base64_encode($row["Bocap"]);
    $kq["Nhanma"]    = base64_encode($row["Nhanma"]);
    $kq["Maket"]     = base64_encode($row["Maket"]);
    $kq["Baobinh"]   = base64_encode($row["Baobinh"]);
    $kq["Songngu"]   = base64_encode($row["Songngu"]);

    array_push($response["detail"], $kq);
}
echo json_encode($response);
?>