• 时间计算相关方法


    PHP 简单的日期加减计算

    <?php
        date_default_timezone_set('PRC'); //默认时区
        echo "今天:",date("Y-m-d",time()),"
    ";
        echo "今天:",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"))."
    ";
    ?>
    

      运行结果:

    今天:2017-11-06
    今天:2008-06-18
    昨天:2017-11-05
    明天:2017-11-07
    一周后:2017-11-13
    一周零两天四小时两秒后:2017-11-15 22:22:42
    下个星期四:2017-11-09
    上个周一:2017-10-30
    一个月前:2017-10-06
    一个月后:2017-12-06
    十年后:2027-11-06
    

      PHP 进阶的日期加减计算

    <?php
        // 默认时区
        date_default_timezone_set('PRC');
         
        echo "今天: ", date('Y-m-d H:i:s'), "
    ";       // 输出当前时间
        echo "明天: ", date('Y-m-d H:i:s', strtotime('+1 day')), "
    ";        // 输出明天时间
         
        //strtotime 可以接受第二个参数,类型timestamp为指定日期
        echo date('Y-m-d H:i:s', strtotime ("+1 day", strtotime('2017-11-11'))), "
    ";
         
         
        // 这里+1 day 可以修改参数1为任何想需要的数 
        // day也可以改成year(年)month(月)hour(小时)minute(分)second(秒)
        echo date('Y-m-d H:i:s', strtotime("+1 day +1 hour +1 minute")), "
    ";
    ?>
    

        运行结果:

    今天: 2017-11-06 18:58:04
    明天: 2017-11-07 18:58:04
    2017-11-12 00:00:00
    2017-11-07 19:59:04
    

      PHP 高级的计算日期时间差

     echo date("Y-m-d H:i:s"), "
    ";
     
        // 日期天数相加函数
        echo date('Y-m-d', strtotime('+1 day', strtotime('2016-09-12'))), "
    
    ";
     
        echo strtotime('2016-09-12'), "
    ";
        echo date("Y-m-d", '1473609600'), "
    ";
        echo date("Y-m-d", '1573609600'), "
    ";
     
        // 日期天数相加函数
        $d = "2016-09-12 10:12:20";
        echo date("Y-m-d", strtotime("$d   +1   day")), "
    
    ";  
     
        // 把日期转换成时间截
        function date2time($d){
            $year=((int)substr("$d",0,4));  //取得年份
            $month=((int)substr("$d",5,2)); //取得月份
            $day=((int)substr("$d",8,2));   //取得几号
            return mktime(0,0,0,$month,$day,$year);
        }
        echo date2time("2016-09-12"), "
    
    ";
     
        $date_1="2066-09-12";
        $date_2="2016-09-12";
        $Date_List_a1=explode("-",$date_1);
        $Date_List_a2=explode("-",$date_2);
        $d1=mktime(0,0,0,$Date_List_a1[1],$Date_List_a1[2],$Date_List_a1[0]);
        $d2=mktime(0,0,0,$Date_List_a2[1],$Date_List_a2[2],$Date_List_a2[0]);
        $Days=round(($d1-$d2)/3600/24);
        echo "$date_2 -> $date_1 相差: $Days 天", "
    ";
    

      运行结果:

    2017-11-06 19:13:02
    2016-09-13
     
    1473609600
    2016-09-12
    2019-11-13
    2016-09-13
     
    1473609600
     
    2066-09-12 -> 2016-09-12 相差: 18262 天
    

      PHP 高级的计算日期时间

    $aaa = "18:00";
    $bbb = 20;
    $ddd = date("H:i",strtotime("$aaa + $bbb minute"));
    echo $ddd;

        运行结果:   18:20

     ————————————————

    版权声明:本文为CSDN博主「阳光岛主」的原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接及本声明。原文链接:https://blog.csdn.net/ithomer/java/article/details/79399146

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  • 原文地址:https://www.cnblogs.com/gramblog/p/13073094.html
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