mySQL error assistance

[KPIZME]

After switching servers, I am getting an error in one of my scripts. Not sure what is wrong since everything worked before, and other functions/scripts appear to be working fine after the move.

Here is the error:

Warning: mysql_close(): supplied argument is not a valid MySQL-Link resource

I also have mysql_close() in other functions that execute withbout error.

Here is a code snippit (using PHP 4.3.3) ... its pretty simple:

function EraseCart($SESSION) {

$connection = mysql_connect("localhost","XXXX","XXXX") or die ("Unable to connect to MySQL server.");
$db = mysql_select_db("XXXX", $connection) or die ("Unable to select database.");

$query="delete from SHOPCART where SESSION='$SESSION'";
$result=mysql_query($query);

if(!$result)

{

 include ("message/dberror.html");
 exit;

}

mysql_close($db);

}

Any suggestions?

Thanks in advance

[LordShryku]

The identifier is the mysql_connect variable, so use mysql_close($connection);

[KPIZME]

Thanks...Now, I wonder why on the old server the error was never triggered. Maybe an older version of PHP that was more forgiving?