用getdate函数取得系统的日期与时间

getdate函数返回一个哈希数组，可以通过 "seconds","minutes","hours",
"mday","wday","mon","year","yday","weekday","month"下标进行访问。
以下是一个访问的实例：

"; } ?> 如时间若为:1999-10-2 18:17:16 则对应结果如下： seconds=16 minutes=17 hours=18 mday=12 wday=2 mon=10 year=1999 yday=284 weekday=Tuesday month=October