php switch case array

1$age=20;
2switch ($age) {
3	case 19:
4        echo "Age is 18";
5        break;
6    case 20:
7        echo "Age is 20";
8        break;
9    case 21:
10        echo "Age is 21";
11        break;
12}

1foreach ($array[0] as $key => $value) {
2    switch ($key) {
3        case 'Products' :
4            // do something
5            break ;
6        case 'customers' :
7            // do something
8            break ;
9        case 'Models' :
10            // do something
11            break ;
12     }
13 }