PHP处理日期和时间小整合

date_default_timezone_set('PRC'); //默认时区
$t = time();
$today=date("Y-m-d",time());
echo "今天：$today
"; 
echo "某一天：".date("Y-m-d",strtotime("18 june 2008"))."
"; 
echo "昨天：".date("Y-m-d",strtotime("-1 day"))."
"; 
echo "明天：".date("Y-m-d",strtotime("+1 day"))."
"; 
echo "一周后：".date("Y-m-d",strtotime("+1 week"))."
"; 
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"))."
"; 
echo "下个星期四：".date("Y-m-d",strtotime("next Thursday"))."
"; 
echo "上个周一：".date("Y-m-d",strtotime("last Monday"))."
"; 
echo "一个月前：".date("Y-m-d",strtotime("last month"))."
"; 
echo "一个月后：".date("Y-m-d",strtotime("+1 month"))."
"; 
echo "十年后：".date("Y-m-d",strtotime("+10 year"))."
";
echo "
=======================================================

";
$w = date("w",time()); //获取今天是本周周几
echo "今天是星期$w
"; 
$d=array("日","一","二","三","四","五","六");
$whatday="星期".$d[date("w",strtotime($today))]; //获取今天星期几
echo "今天是$whatday
"; 
$d0 = date("Y-m-d",strtotime("-$w day",$t)); //周开始 
echo "本周周日是：$d0
"; 
$d6 = date("Y-m-d",strtotime((6-$w)." day",$t)); //周结束 
echo "本周周六是：$d6
"; 

echo "本周周日是：".date("Y-m-d",strtotime("Sunday"))."
";  //周开始 
echo "本周周六是：".date("Y-m-d",strtotime("Saturday"))."
";  //周结束
echo "上周周日是：".date("Y-m-d",strtotime("last Sunday"))."
";  //上周开始 
echo "上周周六是：".date("Y-m-d",strtotime("last Saturday"))."
";  //上周结束
echo "
=======================================================

";
$time = abs((strtotime("2012-12-21") - strtotime(date("Y-m-d")))/86400);//获取两个日期之间的天数差
echo "距离世界末日还有：$time 天
";  //上周结束

以上就介绍了PHP处理日期和时间小整合，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。