Hi, Shouldn't it be: $item_amount_in_store = 223; $update_amount = 7; $item_amount_in_store += $update_amount; $update_amoint_in_store is now 227; The 3rd line seems wrong as you didn't use the same variable. -- Raphaël Khaïat 06.72.89.57.29 On Mon, Jun 24, 2013 at 1:59 PM, Karl-Arne Gjersøyen <karlarneg@xxxxxxxxx>wrote: > $item_amount_in_store = 223; > $update_amount = 7; > $update_item_amount_in_store += $update_amount; > $update_amoint_in_store is now 227; > > Why? That should be 230! > > Karl >
