Warning: mysqli_connect() [function.mysqli-connect]: MySQL server has gone away in /includes/functions/database.php on line 20

Warning: mysqli_connect() [function.mysqli-connect]: Error while reading greeting packet. PID=8809 in /includes/functions/database.php on line 20

Warning: mysqli_connect() [function.mysqli-connect]: (HY000/2006): MySQL server has gone away in /includes/functions/database.php on line 20
Unable to connect to database server!