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php strtotime是否有bug

Jun 06, 2016 pm 08:39 PM
php strtotime

<code>$beginMon=strtotime("-1 week Monday");
$endMon=strtotime("-1 week Tuesday")-1;
echo date("Y-m-d H:i:s", $beginMon);
echo('<br>');
echo date("Y-m-d H:i:s", $endMon);
echo("<br>");

//上面是获取本周一的开始与结束时间戳
//结果如下:
//2015-01-05 00:00:00(错误)
//2014-12-29 23:59:59(正确)

$beginSun=strtotime("+0 week Sunday");
$endSun=strtotime("+1 week Monday")-1;
echo date("Y-m-d H:i:s", $beginSun)."<br>";
echo date("Y-m-d H:i:s",$endSun)."<br>";

//上面获取的是本周末的开始与结束时间戳
//结果如下:
//2015-01-04 00:00:00
//2015-01-11 23:59:59(错误)

//以上案例都是在今天测试(非周末 因为周末)
</code>
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回复内容:

<code>$beginMon=strtotime("-1 week Monday");
$endMon=strtotime("-1 week Tuesday")-1;
echo date("Y-m-d H:i:s", $beginMon);
echo('<br>');
echo date("Y-m-d H:i:s", $endMon);
echo("<br>");

//上面是获取本周一的开始与结束时间戳
//结果如下:
//2015-01-05 00:00:00(错误)
//2014-12-29 23:59:59(正确)

$beginSun=strtotime("+0 week Sunday");
$endSun=strtotime("+1 week Monday")-1;
echo date("Y-m-d H:i:s", $beginSun)."<br>";
echo date("Y-m-d H:i:s",$endSun)."<br>";

//上面获取的是本周末的开始与结束时间戳
//结果如下:
//2015-01-04 00:00:00
//2015-01-11 23:59:59(错误)

//以上案例都是在今天测试(非周末 因为周末)
</code>
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你可以通过阅读相关实现源码来理解为什么会有这样的结果:php_date.c 和 parse_date.c。

另外还可以阅读 官方文档 和 常用时期处理参考 来看看如何实践。

每星期的七天,'sunday' | 'monday' | 'tuesday' | 'wednesday' | 'thursday' | 'friday' | 'saturday' | 'sun' | 'mon' | 'tue' | 'wed' | 'thu' | 'fri' | 'sat' | 'sun' 应该是以当前时间往后推 7 * 24 小时来考量的。本例中,如果你想特指本周的某个星期一,你可以使用 strtotime("-1 week Monday this week"); ,其它的天,类似地,指定是在哪个自然周内(本例即 this week 指定为本自然周),不要让系统自己按自己默认的逻辑处理即可。

注意:回答问题时是周二。

这个并不是bug,php的官方手册中其实就提到过与之类似的一些情况。有些情况下出现strtotime("1 months")并不是下个月,而是下下个月了。具体可以翻一下文档手册.就知道为什么这么处理了。

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