My script for insert a score is not working

I use a script attached to a UI.Button to run a php script in my server. It works fine when i use it for retrieve the scoreboard, but when i try to use into my insert script it just does no work.

Script to access the PHP insertion script:

 public string url;
     public Text Nome;
     public Text Score;
     public void Run()
     {
         StartCoroutine(Gravar());
     }
     public IEnumerator Gravar() 
     {
         WWW www = new WWW(url+"?name='"+Nome.text+"'&score='"+Score.text+"'");
         Debug.Log (www.url);
         yield return www;
     }

PHP insertion script:

 <?PHP
     require_once 'app_config.php';
     connect();
     
     $Nome = $_GET['name'];
     $Score = $_GET['score'];
 
     $query = 'insert into score(score.Nome, score.Score) values('.$Nome.','.$Score.')';
  $result = mysql_query($query) or die ('ERRO : ' .mysql_error());
     
 ?>

And the PHP script is working, because when i get the url that the console gives me and run it on a browser it work just fine. I can't figure out why its not working in unity.