Can we access my sql database using network concept?

Change your localhost to your global DNS ###script.js###

 var addScoreUrl = "http://localhost/connecttosql.php?";//the ? mark is for the query
 function PostScore(name:String, score:int){

var hash = Md5.Md5Sum(name + score + secretKey);

var highscore_url = addScoreUrl + "name=" + WWW.EscapeURL(name) + "≻ore=" + score + "&hash=" + hash;

hs_post = WWW(highscore_url);//send url yield hs_post;// wait untill something back

if(hs_post.error){ print("Error posting score: " + hs_post.error); } Application.LoadLevel("HighScore"); }

connecttosql.php

 <?php 
     $db = mysql_connect('localhost', 'root', '') or die('Could not connect: ' . mysql_error()); 
     mysql_select_db('mydb') 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="777"; # 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. 
         $query = "insert into scores values (NULL, '$name', '$score');"; 
         $result = mysql_query($query) or die('Query failed: ' . mysql_error()); 
     } 

?>