Warning: mysql_connect(): The server requested authentication method unknown to the client [mysql_old_password] in /home/websta91/public_html/cyb_info/whatis/book.php on line 28

Warning: mysql_connect(): The server requested authentication method unknown to the client in /home/websta91/public_html/cyb_info/whatis/book.php on line 28
I cannot connect to the database because: The server requested authentication method unknown to the client