When I try to access my database, it return the message: Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home1/dtt22299/public_html/online_trading/processemail.php on line 10 I do not understand what it mean I use {$con = mysql_connect("localhost","dtt22299_bill","dtt22299bill"); in my processemai.php Are there anything wrong?