PHP:
int mktime ( [int $hour [, int $minute [, int $second [, int $month [, int $day [, int $year [, int $is_dst]]]]]]] )
<?php
print mktime(0, 0, 0, 12, 32, 1997);
?>
Ruby:
Time.mktime( year, month, day, hour, min, sec, usec )
print Time.mktime(1997, 12, 32, 0, 0, 0)