display data from mysql

i want show $_POST username from mysql db in unity 3d text mesh sry for english i have login system and he work my code:

 using UnityEngine;
 using System.Collections;
 using UnityEngine.SceneManagement;
 
 public class database : MonoBehaviour 
 {
     public static string username = "", name = "";
     private string password = "", rePass = "", message = "";
     public bool isSuccess= false;
 
     private bool register = false;
 
     private void OnGUI()
     {
         if (message != "")
             GUILayout.Box(message);
 
         if (register)
         {
             GUILayout.Label("Username");
             username = GUILayout.TextField(username);
             GUILayout.Label("Name");
             name = GUILayout.TextField(name);
             GUILayout.Label("password");
             password = GUILayout.PasswordField(password, "*"[0]);
             GUILayout.Label("Re-password");
             rePass = GUILayout.PasswordField(rePass, "*"[0]);
 
             GUILayout.BeginHorizontal();
 
             if (GUILayout.Button("Back"))
                 register = false;
 
             if (GUILayout.Button("Register"))
             {
                 message = "";
 
                 if (username == "" || name == "" || password == "")
                     message += "Please enter all the fields \n";
                 else
                 {
                     if (password == rePass)
                     {
                         WWWForm form = new WWWForm();
                         form.AddField("username", username);
                         form.AddField("name", name);
                         form.AddField("password", password);
                         WWW w = new WWW("http://f6-preview.awardspace.com/unitytutorial.com/register.php", form);
                         StartCoroutine(registerFunc(w));
                     }
                     else
                         message += "Your Password does not match \n";
                 }
             }
 
             GUILayout.EndHorizontal();
         }
         else
         {
             GUILayout.Label("User:");
             username = GUILayout.TextField(username);
             GUILayout.Label("Password:");
             password = GUILayout.PasswordField(password, "*"[0]);
 
             GUILayout.BeginHorizontal();
 
             if (GUILayout.Button("Login"))
             {
                 message = "";
 
                 if (username == "" || password == "")
                     message += "Please enter all the fields \n";
                 else
                 {
                     WWWForm form = new WWWForm();
                     form.AddField("username", username);
                     form.AddField("password", password);
                     WWW w = new WWW("http://localhost/tester/login.php", form);
                     StartCoroutine(login(w));
                 }
             }
 
             if (GUILayout.Button("Register"))
                 register = true;
 
             GUILayout.EndHorizontal();
         }
     }
 
     IEnumerator login(WWW w)
     {
         yield return w;
         if (w.error == null)
         {
             if (w.text == "login-SUCCESS")
             {
                 isSuccess = true;
 
             }
             else
                 message += w.text;
         }
         else
         {
             message += "ERROR: " + w.error + "\n";
         }
     }
 
     IEnumerator registerFunc(WWW w)
     {
         yield return w;
         if (w.error == null)
         {
             message += w.text;
         }
         else
         {
             message += "ERROR: " + w.error + "\n";
         }
     }
 
     void Update (){
         if(isSuccess == true){
             SceneManager.LoadScene("haha");
         }
     }
 }

and my usernameshow code,plss help me, i put usernameshow in text mesh

 using UnityEngine;
 using System.Collections;
 using System.Text.RegularExpressions;
 public class usernameshow : MonoBehaviour {
 
     public static string username = "";
 
 
     // Use this for initialization
     void OnGUI () {
         
         string url = "http://localhost/tester/login.php";
         WWW www = new WWW (url);
 
         StartCoroutine (registerFunc (www));
 
         GetComponent<TextMesh>().text = username;
     }
 
     IEnumerator registerFunc(WWW www)
     {
         yield return www;
 
         username = www.text;
 
 
 
 
     }
 
 
 
 
 
     // Update is called once per frame
     void Update () {
     
     }
 }