how to save value to mysql

Hi,

I'm using scripts from the page Server Side Highscores for my purposes. I edited it slightly but it doesn't work. The value is not saving and I keep getting this message in php page:

Notice: Undefined index: Name in C:\xampp\htdocs\unitypb\saveVerant.php on line 6 Notice: Undefined index: Value in C:\xampp\htdocs\unitypb\saveVerant.php on line 7 Notice: Undefined index: hash in C:\xampp\htdocs\unitypb\saveVerant.php on line 8

This is the php code

 <?php 
         $db = mysql_connect('localhost', 'root', '') or die('Could not connect: ' . mysql_error()); 
         mysql_select_db('unitypb') or die('Could not select database');
  
         // Strings must be escaped to prevent SQL injection attack. 
         $name = mysql_real_escape_string($_GET['Name'], $db); 
         $score = mysql_real_escape_string($_GET['Value'], $db); 
         $hash = $_GET['hash']; 
  
         $secretKey="mySecretKey"; # Change this value to match the value stored in the client javascript below 
 
         $real_hash = md5($name . $score . $secretKey); 
         if($real_hash == $hash) { 
             // Send variables for the MySQL database class. 
             $query = "INSERT INTO `verant` ( `ID` , `Name` , `Value` ) VALUES ('10', 'a', 'b')";
             $result = mysql_query($query) or die('Query failed: ' . mysql_error()); 
         } 
 ?>

and this is the c# code:

 using UnityEngine;
 using UnityEngine.UI;
 using System.Collections;
 using System.Collections.Generic;
 
 public class SQL_InputVS : MonoBehaviour {
 
     private string secretKey = "mySecretKey"; // Edit this value and make sure it's the same as the one stored on the server
     public string addScoreURL = "http://localhost/unitypb/saveVerant.php?"; //be sure to add a ? to your url
 
 
     Text text;
 
     void Awake (){
         text = transform.Find ("Text").GetComponent <Text> ();
     }
 
 
     public void sendDatabase () {
         StartCoroutine (saveValue ("Verant-" + this.transform.name, text.text));
     }
         
 
     IEnumerator saveValue (string Name, string Value) {
 
         //This connects to a server side php script that will add the name and score to a MySQL DB.
         // Supply it with a string representing the players name and the players score.
         string hash = Md5Sum (Name + Value + secretKey);
 
         string post_url = addScoreURL + "name=" + WWW.EscapeURL(Name) + "&score=" + Value + "&hash=" + hash;
 
         // Post the URL to the site and create a download object to get the result.
         WWW hs_post = new WWW(post_url);
         yield return hs_post; // Wait until the download is done
 
         if (hs_post.error != null)
         {
             print("There was an error: " + hs_post.error);
         }
 
     }
 
     public string Md5Sum(string strToEncrypt)
     {
         System.Text.UTF8Encoding ue = new System.Text.UTF8Encoding();
         byte[] bytes = ue.GetBytes(strToEncrypt);
 
         // encrypt bytes
         System.Security.Cryptography.MD5CryptoServiceProvider md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();
         byte[] hashBytes = md5.ComputeHash(bytes);
 
         // Convert the encrypted bytes back to a string (base 16)
         string hashString = "";
 
         for (int i = 0; i < hashBytes.Length; i++)
         {
             hashString += System.Convert.ToString(hashBytes[i], 16).PadLeft(2, '0');
         }
 
         return hashString.PadLeft(32, '0');
     }
 }