PHP strtotime：获取上个月
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PHP strtotime: Get previous month
提问by Martin
Possible Duplicate:
How to get previous month and year relative to today, using strtotime and date?
Today is December, 31st but strtotime("-1 months")returns December:
今天是 12 月 31 日，但strtotime("-1 months")返回 12 月：
echo date("Y-m", strtotime("-1 months"));
Same for strtotime("last month")
同为 strtotime("last month")
How can I properly return the previous month (November)?
如何正确返回上个月（11 月）？
回答by salathe
strtotime("first day of last month")
The first day ofis the important part as detailed on the Relative Formatsmanual page.
这first day of是相对格式手册页上详述的重要部分。
Example: http://codepad.viper-7.com/dB35q8(with hard-coded today's date)
示例：http: //codepad.viper-7.com/dB35q8（硬编码今天的日期）
回答by Olaf Dietsche
strtotime("-1 months")would be 2012-11-31, but there's no November, 31st. It is one day past 2012-11-30, which gives 2012-12-01. You will see it, when you do
strtotime("-1 months")会2012-11-31，但没有 11 月 31 日。一天过去了2012-11-30，这给了2012-12-01。你会看到的，当你这样做的时候
echo date("Y-m-d", strtotime("-1 months"));
gives as output
作为输出给出
2012-12-01
2012-12-01
See codepad
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