Warning: mysqli_connect() [function.mysqli-connect]: (00000/1129): Host '111.118.180.115' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts' in D:\Inetpub\vhosts\itmaligarh.com\httpdocs\alumni-registration\config.php on line 14

Warning: mysqli_error() expects exactly 1 parameter, 0 given in D:\Inetpub\vhosts\itmaligarh.com\httpdocs\alumni-registration\config.php on line 14
I cannot connect to the database because 1 :