login system with sessions

[TheBOZZ]

i have created a login system with sessions in php,when used header to redirect to a particular page after checking username and password, it shows the following in firebug response "Failed to load source for: http://localhost/emp_tracker/main/edit_new.php",but it redirects in local system instead in server when i host it does not redirect.Is there any way to redirect other than \[code\]header('Location:'.$filename)\[/code\];Code:\[code\]<?phpsession_start();include("db_connect.php");$filename="edit-grid.php";$myusername = mysql_real_escape_string($_REQUEST['myusername']);$encrypted_mypassword = mysql_real_escape_string(crypt($_REQUEST['mypassword'], 'ctk'));$check_query=mysql_query("select * from login where u_name='$myusername' and password='$encrypted_mypassword'");$session_value=http://stackoverflow.com/questions/3863338/mysql_fetch_array($check_query);$count=mysql_num_rows($check_query);$session_name=$session_value['u_name'];if($count==1){$_SESSION['session_name']=$session_name;header('Location:'.$filename);}?>\[/code\]