php 月初和月底的时间戳
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Timestamps of start and end of month
提问by Kir
How can one get the timestamps of the first and last minutes of any month using PHP?
如何使用 PHP 获取任何一个月的第一分钟和最后一分钟的时间戳？
回答by Felix Kling
$first_minute = mktime(0, 0, 0, date("n"), 1);
$last_minute = mktime(23, 59, 59, date("n"), date("t"));
That is for the current month. If you want to have it for any month, you have change the month and day parameter accordingly.
那是当月的。如果您想在任何月份使用它，您可以相应地更改月和日参数。
If you want to generate it for every month, you can just loop:
如果你想每个月都生成它，你可以循环：
$times = array();
for($month = 1; $month <= 12; $month++) {
$first_minute = mktime(0, 0, 0, $month, 1);
$last_minute = mktime(23, 59, 59, $month, date('t', $first_minute));
$times[$month] = array($first_minute, $last_minute);
}
回答by enobrev
With PHP 5.3, you can do
使用 PHP 5.3，你可以做到
$oFirst = new DateTime('first day of this month');
$oLast = new DateTime('last day of this month');
$oLast->setTime(23, 59, 59);
In PHP 5.2
在 PHP 5.2 中
Note: as AllThecodepointed out in the comments below, this next example onlyworks if you do the $oFirstportion first. If you add +1 monthto new DateTimethe result will jump an extra month ahead on the last day of the month (as of php 5.5.9).
注意：正如AllThecode在下面的评论中指出的那样，下一个示例仅在您先执行该$oFirst部分时才有效。如果添加+1 month到new DateTime结果将在该月的最后一天提前一个月（从 php 5.5.9 开始）。
$oToday = new DateTime();
$iTime = mktime(0, 0, 0, $oToday->format('m'), 1, $oToday->format('Y'));
$oFirst = new DateTime(date('r', $iTime));
$oLast = clone $oFirst;
$oLast->modify('+1 month');
$oLast->modify('-1 day');
$oLast->setTime(23, 59, 59);
回答by phihag
Use mktimefor generating timestamps from hour/month/day/... values and cal_days_in_monthto get the number of days in a month:
使用mktime从小时/月/日/... 值和cal_days_in_month生成时间戳以获取一个月中的天数：
$month = 1; $year = 2011;
$firstMinute = mktime(0, 0, 0, $month, 1, $year);
$days = cal_days_in_month(CAL_GREGORIAN, $month, $year);
$lastMinute = mktime(23, 59, 0, $month, $days, $year);
回答by amielcar
I think better then
我觉得更好
$first_minute = mktime(0, 0, 0, date("n"), 1);
$last_minute = mktime(23, 59, 0, date("n"), date("t"));
is:
是：
$first_minute = mktime(0, 0, 0, date("n"), 1);
$last_minute = mktime(23, 59, 0, date("n") + 1, 0);
回答by amielcar
This requires PHP > 5.2 and need adjustement for the "minutes" part
这需要 PHP > 5.2 并且需要对“分钟”部分进行调整
$year = ...; // this is your year
$month = ...; // this is your month
$month = ($month < 10 ? '0' . $month : $month);
$start = new DateTime($year . '-' . $month . '-01 00:00:00');
$end = $start->modify('+1 month -1 day -1 minute'); //perhaps this need 3 "->modify"
echo $start->format('U');
echo $end->format('U');
(not tested)
（未测试）
回答by Prahlad
$date = new \DateTime('now');//Current time
$date->modify("-1 month");//get last month
$startDate = $date->format('Y-m-01');
$endDate = $date->format('Y-m-t');
回答by Rahamath Ali Khan
Best Way do like this..
最好的方式这样做..
$first_day = date('m-01-Y h:i:s',strtotime("-1 months"));
$first_day = date('m-01-Y h:i:s',strtotime("-1 个月"));
$last_day = date('m-t-Y h:i:s',strtotime("-1 months"));
$last_day = date('mtY h:i:s',strtotime("-1 个月"));
