mysqli_connect($server, $username, $password, $database)	Connect server to database
mysqli_close($connection_variable)	Close connection
mysqli_error($connection_variable)	Return query error
mysqli_query($connection_variable, $query)	Perform query
mysqli_real_escape_string($conn, $field_value)	Escape special string from data
mysqli_num_rows($result)	Return number of records avaiable in query result
mysqli_fetch_array($result)	Return number of records from query result