PHP connection Fatal Error [duplicate]

This question already has answers here: mysqli_query() expects parameter 1 to be mysqli, object given (3 answers) Closed 2 years ago.

Warning: mysqli_close() expects parameter 1 to be mysqli, 
    object given in /home/mjcrawle/public_html/toga/homefile/processlogin.php on line 63

I am trying to connect a database and I am getting the above error. I I am using 4 different includes in this fil开发者_StackOverflow中文版e and the include are before I try to connect to the database.

Sample of one of my includes

require_once('../homefile/class/database.class.php');

The include work fine and this is my line of code to connect my db.

/*New database Object*/
$db = new Database;

I am kind at a loss... The database is closed.

mysqli_close($db);

There is a ton of code but I am not sure anyone would want to wade though it. If you can thing of anything let me know.

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Firstly, mysqli_close expects the arugment to be a handle opened with mysql_open, but instead you've passed it a Database object.

Secondly, we don't know what that class contains, but I would expect that it has a method like ->close() that closes the database connection.

Ie,

$db->close();