Warning: mysqli::mysqli(): (HY000/2003): Can't connect to MySQL server on '127.0.0.1' (111) in /home/dfhsorgu/public_html/index.php on line 15

Warning: mysql_connect(): Can't connect to MySQL server on '127.0.0.1' (111) in /home/dfhsorgu/public_html/cart.inc on line 31
I cannot connect to the database.