posting the latest of something to the top of the row

[eluser]Unknown[/eluser]
I would check the user guide (http://ellislab.com/codeigniter/user-gui...ecord.html) for the Active Record class and use $this->db->orderby(); passing the date stamp or id or whatever column you are trying to order by.

Of course, if you are using a query directly rather than Active Record, just include the ORDER BY clause in your SQL.

You shouldn't need to do anything with the array itself or any additional code.