The control structure `foreach' works its way through an array one item at a time.
foreach $item (1, 2, 3 ,4 ,5 ) { print "Item: $item\n"; }
In this example the array is the numbers from 1 to 5, each is put into the variable `$item' and then printed.
If the item isn't explicitly mentioned, it is stored in the perl default variable $_.
@alphabet = (a..z); foreach (@alphabet) { print "$_,"; } print "\n";