Server Side Highscores TUTORIAL Help for Update

Unity Engine
1

Hi i have a problem
i use this tutorial for crete my database end whit file PHP i read/write db

http://www.unifycommunity.com/wiki/index.php?title=Server_Side_Highscores
If i create i file PHP whit comand DELETE work but if i create PHP file whit UPDATE comand not work why?

i have used this code for test for explese if i wont update the score of table scores

<?php 

        $db = mysql_connect('mysql_host', 'mysql_user', 'mysql_password') or die('Could not connect: ' . mysql_error()); 
        mysql_select_db('my_database') 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['score'], $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 = "UPDATE scores SET score  = $score WHERE Name = $name"; 
            $result = mysql_query($query) or die('Query failed: ' . mysql_error()); 
        } 


?>

but not update why?

2

Stupid question, but I’m assuming you’ve replaced all the temporary text (“mysql_host”, “mysql_user”, “mysql_password”, “mySecretKey”) as necessary and created all the associated tables?