Hi guys i'm having a problem in my php script and it says
Notice: Undefined index: Name in /storage/h6/881/1096881/public_html/InsertScore.php on line 16
Notice: Undefined index: Score in /storage/h6/881/1096881/public_html/InsertScore.php on line 16
Notice: Undefined variable: hash in /storage/h6/881/1096881/public_html/InsertScore.php on line 17
try {
        $dbh = new PDO('mysql:host='. $hostname .';dbname='. $database,   $username, $password);
    } catch(PDOException $e) {
        echo '<h1>An error has ocurred.</h1><pre>', $e->getMessage() ,'</pre>';
    }
    $realHash = md5($_GET['Name'] . $_GET['Score'] . $secretKey); 
    if($realHash == $hash) { 
        $sth = $dbh->prepare('INSERT INTO getdataofplayer VALUES (null, :Name, :Score)');
        try {
            $sth->execute($_GET);
        } catch(Exception $e) {
            echo '<h1>An error has ocurred.</h1><pre>', $e->getMessage() ,'</pre>';
        }
    } 
 
    