PHP 从用日期 ('m-Y') 格式化的日期中减去 1 个月
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PHP subtract 1 month from date formatted with date ('m-Y')
提问by Grant
I'm trying to subtract 1 month from a date.
我正在尝试从日期中减去 1 个月。
$today = date('m-Y');
This gives: 08-2016
这给出：08-2016
How can I subtract a month to get 07-2016?
我怎样才能减去一个月得到07-2016？
回答by Mamta
<?php
echo $newdate = date("m-Y", strtotime("-1 months"));
output
输出
07-2016
回答by Alexey Kosov
Warning!The above-mentioned examples won't work if call them at the end of a month.
警告！如果在月底调用它们，上述示例将不起作用。
<?php
$now = mktime(0, 0, 0, 10, 31, 2017);
echo date("m-Y", $now)."\n";
echo date("m-Y", strtotime("-1 months", $now))."\n";
will output:
将输出：
10-2017
10-2017
The following example will produce the same result:
以下示例将产生相同的结果：
$date = new DateTime('2017-10-31 00:00:00');
echo $date->format('m-Y')."\n";
$date->modify('-1 month');
echo $date->format('m-Y')."\n";
Plenty of ways how to solve the issue can be found in another thread: PHP DateTime::modify adding and subtracting months
很多解决问题的方法可以在另一个线程中找到：PHP DateTime::modify加减月
回答by Vinod VT
Try this,
尝试这个，
$today = date('m-Y');
$newdate = date('m-Y', strtotime('-1 months', strtotime($today)));
echo $newdate;
回答by Jakub Krawczyk
Depending on your PHP version you can use DateTime object (introduced in PHP 5.2 if I remember correctly):
根据您的 PHP 版本，您可以使用 DateTime 对象（如果我没记错的话，在 PHP 5.2 中引入）：
<?php
$today = new DateTime(); // This will create a DateTime object with the current date
$today->modify('-1 month');
You can pass another date to the constructor, it does not have to be the current date. More information: http://php.net/manual/en/datetime.modify.php
您可以将另一个日期传递给构造函数，它不必是当前日期。更多信息：http: //php.net/manual/en/datetime.modify.php
回答by Anilbk
if(date("d") > 28){
$date = date("Y-m", strtotime("-".$loop." months -2 Day"));
} else {
$date = date("Y-m", strtotime("-".$loop." months"));
}
回答by Brennan James
$lastMonth = date('Y-m', strtotime('-1 MONTH'));
回答by Mani
First change the date format m-Y to Y-m
首先将日期格式 myY 更改为 Ym
$date = $_POST('date'); // Post month
or
$date = date('m-Y'); // currrent month
$date_txt = date_create_from_format('m-Y', $date);
$change_format = date_format($date_txt, 'Y-m');
This code minus 1 month to the given date
此代码减去 1 个月到给定日期
$final_date = new DateTime($change_format);
$final_date->modify('-1 month');
$output = $final_date->format('m-Y');
回答by ChinmayW
Try this,
尝试这个，
$effectiveDate = date('2018-01'); <br>
echo 'Date'.$effectiveDate;<br>
$effectiveDate = date('m-y', strtotime($effectiveDate.'+-1 months'));<br>
echo 'Date'.$effectiveDate;
回答by Sander Jentjens
$currentMonth = date('m', time());
$currentDay = date('d',time());
$currentYear = date('Y',time());
$lastMonth = $currentMonth -1;
$one_month_ago=mkdate(0,0,0,$one_month_ago,$currentDay,$currentYear);
This could be rewritten more elegantly, but it works for me
这可以更优雅地重写，但它对我有用
