if ([/COLOR][COLOR="#0000BB"]$this[/COLOR][COLOR="#007700"]->[/COLOR][COLOR="#0000BB"]db_id[/COLOR][COLOR="#007700"]) return[/COLOR][COLOR="#0000BB"]mysql_real_escape_string[/COLOR][COLOR="#007700"]([/COLOR][COLOR="#0000BB"]$source[/COLOR][COLOR="#007700"],[/COLOR][COLOR="#0000BB"]$this[/COLOR][COLOR="#007700"]->[/COLOR][COLOR="#0000BB"]db_id[/COLOR][COLOR="#007700"]);