PHP处理日期和时间小整合

 1 date_default_timezone_set('PRC'); //默认时区

 2 $t = time();

 3 $today=date("Y-m-d",time());

 4 echo "今天：$today<br />"; 

 5 echo "某一天：".date("Y-m-d",strtotime("18 june 2008"))."<br />"; 

 6 echo "昨天：".date("Y-m-d",strtotime("-1 day"))."<br />"; 

 7 echo "明天：".date("Y-m-d",strtotime("+1 day"))."<br />"; 

 8 echo "一周后：".date("Y-m-d",strtotime("+1 week"))."<br />"; 

 9 echo "一周零两天四小时两秒后：".date("Y-m-d G：H：s",strtotime("+1 week 2 days 4 hours 2 seconds"))."<br />"; 

10 echo "下个星期四：".date("Y-m-d",strtotime("next Thursday"))."<br />"; 

11 echo "上个周一：".date("Y-m-d",strtotime("last Monday"))."<br />"; 

12 echo "一个月前：".date("Y-m-d",strtotime("last month"))."<br />"; 

13 echo "一个月后：".date("Y-m-d",strtotime("+1 month"))."<br />"; 

14 echo "十年后：".date("Y-m-d",strtotime("+10 year"))."<br />";

15 echo "<br />=======================================================<br /><br />";

16 $w = date("w",time()); //获取今天是本周周几

17 echo "今天是星期$w<br />"; 

18 $d=array("日","一","二","三","四","五","六");

19 $whatday="星期".$d[date("w",strtotime($today))]; //获取今天星期几

20 echo "今天是$whatday<br />"; 

21 $d0 = date("Y-m-d",strtotime("-$w day",$t)); //周开始 

22 echo "本周周日是：$d0<br />"; 

23 $d6 = date("Y-m-d",strtotime((6-$w)." day",$t)); //周结束 

24 echo "本周周六是：$d6<br />"; 

25 

26 echo "本周周日是：".date("Y-m-d",strtotime("Sunday"))."<br />";  //周开始 

27 echo "本周周六是：".date("Y-m-d",strtotime("Saturday"))."<br />";  //周结束

28 echo "上周周日是：".date("Y-m-d",strtotime("last Sunday"))."<br />";  //上周开始 

29 echo "上周周六是：".date("Y-m-d",strtotime("last Saturday"))."<br />";  //上周结束

30 echo "<br />=======================================================<br /><br />";

31 $time = abs((strtotime("2012-12-21") - strtotime(date("Y-m-d")))/86400);//获取两个日期之间的天数差

32 echo "距离世界末日还有：$time 天<br />";  //上周结束