给出的特定日期仅在今天返回

问题描述

我正在使用在 Calendar Recurring/Repeating Events - Best Storage Method 上找到的代码

有人可以帮我让脚本从给定日期开始运行吗？脚本运行良好，但总是从今天开始。

我想改变： $Now = strtotime("今天"); 到 $Now = strtotime("2021-04-01");

//    $Now = strtotime("today");
//$Now = date( "Y-m-d",strtotime( "2009-01-31" ));
//$Now = date("Y-m-d",strtotime("2014-12-31") );
//$Now = "2013-04-11";
//$Now = date("Y-m-d",strtotime("2015-04-01"))."\n";
//$Now = strtotime('2007-12-21');
$Now = strtotime('11-11-2007');
    $pushToFirst = 0;
    for($i = $pushToFirst; $i < $pushToFirst+3; $i++)
    {
        $Now = strtotime("+".$i." day");
//$Now = date("+".$i." day");
        $year = date("Y",$Now);
        $month = date("m",$Now);
        $day = date("d",$Now);
        $NowString = $year . "-" . $month . "-" . $day;
        $week = (int) ((date('d',$Now) - 1) / 7) + 1;
        $weekday = date("N",$Now);
        echo $NowString . "<br />";
        echo $week . " " . $weekday . "<br />";
        $sql = "SELECT EV.*
                FROM `planering1` EV
                RIGHT JOIN `planering_namn` PN1 ON PN1.`NAMN` = EV.`namn`
                RIGHT JOIN `planering_Meta` EM1 ON EM1.`event_id` = EV.`ID`
                WHERE ( DATEDIFF( '$NowString',repeat_start ) % repeat_interval = 0 )
                OR ( 
                    (repeat_year = $year OR repeat_year = '*' )
                    AND
                    (repeat_month = $month OR repeat_month = '*' )
                    AND
                    (repeat_day = $day OR repeat_day = '*' )
                    AND
                    (repeat_week = $week OR repeat_week = '*' )
                    AND
                    (repeat_weekday = $weekday OR repeat_weekday = '*' )
                    AND repeat_start <= DATE('$NowString')
                )";
        foreach ($dbConnect->query($sql) as $row) {
            print $row['namn'] . "\t";
            print $row['tur'] . "<br />";
        }
        echo "<br /><br /><br />";
    }

解决方法

我会考虑更改这部分代码

// $now = strtotime('11-11-2007'); // remove this line
$start = strtotime('2021-04-01'); // the date you want to start with

    $pushToFirst = 0;
    for($i = $pushToFirst; $i < $pushToFirst+3; $i++)
    {
        //        $now = strtotime("+".$i." day"); // remove this line

        // there are 86400 secs in a day,this will increase the day based on the start date,rather then just taking +$i days from now
        $now = $start + ($i * 86400);

编辑

strtotime 假设您正在谈论“现在”，作为默认参考点。因此，如果您说 strtotime("+1 天")，那将是从现在起 1 天，如果您说 strtotime("+5 天")，那将是从现在起 5 天。

有几种方法可以解决这个问题，

strtotime 可以接受 2 个参数

https://www.php.net/manual/en/function.strtotime.php

strtotime("+1 day",$start),将在参考点使用 $start。所以 $start + 1day

$now = $start + ($i * 86400); 这就是我选择使用的，每天有 86400 秒，所以我只是以秒为单位添加天数

两者都有相同的结果，请使用您更易读的任何一种。

mysql recurring strtotime