Button blue can add blue item, red button adding red button, etc. one button can be clicked more than once, hence there can be more than one blue or red item.
the table is as below
item id details size blue cheap small blue expensive big blue cheap small red cheap small red ok average
how can i assign the id for each of them so that the table is as below
item id details size blue 1 cheap small blue 2 expensive big blue 3 cheap small red 1 cheap small red 2 ok average