classe per le sessioni che da errore

[rocco.mod]

E QUESTO E IL CONFIG.PHP

class DB{
var $db_host ='localhost';
var $db_user ='root';
var $db_pass ='maurizio';
var $db_name ='supp';


var $SMARTY_LIBRARY ='';



    //PHP5 Constructor
    function __construct() {
        global $db_host,$db_user,$db_pass,$db_name;
            
        $this->host = $db_host;
        $this->user = $db_user;
        $this->pass = $db_pass;
        $this->name = $db_name;
    }
    //PHP4 Constructor
    function database() {
        global $db_host,$db_user,$db_pass,$db_name;
        
        $this->host = $db_host;
        $this->user = $db_user;
        $this->pass = $db_pass;
        $this->name = $db_name;
    }

 function connect()
 {
   @mysql_connect($this->db_host,$this->db_user,$this->db_pass)or die("non riesco a connettermi".mysql_error());
  @mysql_select_db($this->db_name)or die("non riesco selezionare il database");
 }

 function disconnect()
 {
  if( !mysql_close()){
  die("Could not close DB");
  }
 }
}