[Pass multiple variables]

Ok, I'm trying to adapt a bit of code.  Right now it limits what it returns to 1 category, category "2", I need it to return items from categories 2,3,4,5,6,7.  I know this is pretty basic, but I can't get it to work.

 

The $includeCat part.

 

Thanks!

$currentItem = K2Table::getInstance('K2Item', 'Table');
        $currentItem->load($itemID);
        $itemCat = $currentItem->get('catid');
        $includeCat = 2;
 if($includeCat)
            $query .= " AND c.id = {$includeCat} ";
		$query .= " AND c.trash = 0 
				AND (i.id) IN ({$sql}) 
				ORDER BY i.created DESC";