save notes

<?php
require_once("koneksi.php");
if($_SERVER['REQUEST_METHOD'] == 'POST'){
    $title = $_POST['title'];
    $note = $_POST['note'];
    $color = $_POST['color'];

    $query = "INSERT INTO notes(title, note, color) VALUES('$title', '$note','$color')";

    if(mysqli_query($conn, $query)){
        $response['success'] = true;
        $response['message'] = "Successfully!";
    }else{
        $response['success'] = false;
        $response['message'] = "Failure!";
    }
}else{
    $response['success'] = false;
    $response['message'] = "Error!";
}
echo json_encode($response);
?>