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Home Backend Development PHP Tutorial 请教 PHP 中计算离生日还剩下多少天问题?

请教 PHP 中计算离生日还剩下多少天问题?

Jun 06, 2016 pm 08:37 PM
php

如 生日是10-04 那么离他生日应该有200多天的样子 求支招

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如 生日是10-04 那么离他生日应该有200多天的样子 求支招

http://php.net/manual/en/datetime.diff.php

<code><?php $datetime1 = new DateTime('2009-10-11');
$datetime2 = new DateTime('2009-10-13');
$interval = $datetime1->diff($datetime2);
echo $interval->format('%R%a days');
</code>
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算日期的时候非常忌讳自己去算,因为这是一个很复杂的问题,一天并非总是 24 小时(比如非夏令时向夏令时切换的那一天只有 23 个小时),每个小时也并非就是 3600 秒(UTC 和 GMT 相差超过一秒的时候会添加闰秒),一年也并非总是 365 天(闰年),闰年也并非是四年一次(每个世纪的首年必须能被 400 整除才算)。然后还有不同时区的区别,时区之间并非仅仅是时间相差几个小时那么简单。

所以算时间一定要用专业的库,当然 PHP 自带的这个 DateTime 可能并不能覆盖到所有的情况,不过毕竟是自带的,大多数情况下够用了。

这里有一个非常好的php时间组件:https://github.com/briannesbitt/Carbon

<code>ceil( ( strtotime ("2015-10-04") - strtotime( date("y-m-d") ) )/86400 );
</code>
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@王子亭 这个diff我还从来没用过,长见识了

Carbon + 1

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