my $count = 0;

    my $fetch_img = sub {
        my $item = shift;
        #arbeite...
        $count++;
    };

    for my $item (@images) {
        $fetch_img->($item);
    }

    print "Zahl: $count";

   my $count = 0;
   for my $item (@images) {
        #arbeite...
        $count++;
   }

   print "Zahl: $count";