php 获取本月的最后一天？
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Get the last day of the month?
提问by gremo
Possible Duplicate:
PHP last day of the month
可能的重复：
PHP 本月的最后一天
Is there any function like $date->getMonthDays()or $date->getLastDayOfMonth()in PHP to get the number of days in a given month (or the last day number)?
是否有类似$date->getMonthDays()或$date->getLastDayOfMonth()在 PHP 中的函数来获取给定月份（或最后一天）的天数？
$start = new DateTime('2012-02-01');
$end = clone $start;
// Interval = last day of the month minus current day in $start
$interval = $start->getLastDayOfMonth() - intval($start->format('j'));
$end->add(new DateInterval('P' . $interval . 'D'));
EDIT: thanks, voted to close, it's a duplicate, sorry for asking...
编辑：谢谢，投票关闭，这是重复的，抱歉问...
回答by Preau
The php date function gives you the number of days in the month with 't'
php date 函数为您提供带有 't' 的月份中的天数
date("t");
回答by MartijnG
It's simple to get last month date
获取上个月日期很简单
echo date("Y-m-t", strtotime("-1 month") ) ;
echo date("Y-m-1", strtotime("-1 month") ) ;
at March 3 returns
3 月 3 日返回
2011-02-28
2011-02-1
回答by Brad Christie
tgives you the total number of days in the current month. jgives you the current day of the month.
t给你当月的总天数。j给你当月的当前日期。
Using modifyand some subtraction from format-ing the datetime, you can get to the end of the month.
使用modify并从format-ing 日期时间中减去一些，您可以到月末。
$date = new DateTime();
$lastDayOfMonth = $date->modify(
sprintf('+%d days', $date->format('t') - $date->format('j'))
);
