php如何做日期操作 [英] php how to to do operation on date
问题描述
我有 2013-09-01
是开始日期,我每个月有30天。我的工作我需要提醒告诉我的用户在结束月份前10天(这意味着 2013-09-20
我必须提醒消息它是10天更多在本月底
)。所以每个人都有任何帮助来计算的想法。我喜欢不喜欢( +, - ,*,/
)。现在我有一些数据,如
<?php
date_default_timezone_set('Asia / Phnom_Penh');
$ current = time();
$ start = 1380188957;
echo'开始日期:'。 date('Y-m-d',$ start)。\\\
echo'< br />';
$ repeat = 30;
$ enddate = time()+($ repeat * 24 * 60 * 60);
echo'结束日期:'。 date('Y-m-d',$ enddate)\\\
;
感谢您的帮助。
不是每个月都有31天,你可以通过使用 date()
函数中的字符串格式参数的t 选项。
//当前时间为unix时间戳
$ now = time();
//当月的天数
$ days_this_month = date(t,time());
//当月的最后一天作为unix时间戳;
$ end_of_month = strtotime(date(Y-m-t,time()));
//月底前十天为unix时间戳
$ ten_days = strtotime(' - 10天',$ end_of_month);
现在我们可以检查一下是否在月底前10天: / p>
if($ now> $ ten_days){
//做某事
}
I have problem when i want calculate date. Simple Example:
I have 2013-09-01
is start date and I have 30day per month. My work i need alert tell to my user in 10 day before end month(it's mean on 2013-09-20
i must alert message it's 10day more for end of this month
). So every one have any idea for help to calculate it. becuese i like can't (+, -, *,/
) on date. Now i am some data like
<?php
date_default_timezone_set('Asia/Phnom_Penh');
$current = time();
$start = 1380188957;
echo 'Start date: '. date('Y-m-d', $start) ."\n";
echo '<br/>';
$repeat = 30;
$enddate = time() + ($repeat * 24 * 60 * 60);
echo 'end date: '. date('Y-m-d', $enddate) ."\n";
Thanks in advent for helping.
Not every month has 31 days, you can get the number of days in any month by using the t
option for the string format param in php's date()
function.
// Current time as unix timestamp
$now = time();
// Number of days in current month
$days_this_month = date("t", time());
// Last day of the current month as a unix timestamp;
$end_of_month = strtotime(date("Y-m-t", time()));
// Ten days before the end of the month as a unix timestamp
$ten_days = strtotime('-10 days', $end_of_month);
Now we can do a check to see if it is 10 days before the end of the month:
if($now > $ten_days) {
// Do something
}
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