$i = 0;
where 12 is the size of my array. and i is an index, or is there an alternative?
while($i != 12){
    if($month = $array[i]){
         print "yes it's a month\n";
}
}

##</code><code>##

for $i (0..$#array) { # just in case they change the number of months :)
  next unless ($month eq $array[$i]); # skip if not equal
  print "Yes its a month\n";
  last; # no need to check other months so exit loop
}