简体繁体 English

PHP strtotime在小于1900的日期返回false

[英]PHP strtotime returning false for dates less than 1900

原文 2011-08-25 23:50:11 0 2 php/ strtotime

I know this question is very popular 我知道这个问题非常受欢迎

Asked here PHP: strtotime is returning false for a future date? 在这里问到PHP：strtotime在未来的日期会返回false吗？ and here How can I work with dates before 1900 in PHP? 在这里我如何在PHP中使用1900年之前的日期？

Could you please confirm my choices: 你能否确认一下我的选择：

Upgrade to a 64bit architecture 升级到64位架构
Replace the strtotime calls by DateTime + DateInterval We can't call DateTime->getTimestamp but we can use DateInterval to calculate the diff 用DateTime + DateInterval替换strtotime调用我们不能调用DateTime-> getTimestamp但我们可以使用DateInterval来计算diff

Do I have any other options? 我还有其他选择吗？ Unfortunately, I can't pick option 2 because I am relying on ORM (Propel) + a lot of legacy code using strtotime. 不幸的是，我不能选择选项2，因为我依赖于ORM（Propel）+使用strtotime的许多遗留代码。 Refactoring this stuff + customizing the ORM generators could be more expensive than upgrading to 64bits. 重构这些东西+自定义ORM生成器可能比升级到64位更昂贵。

If anybody could confirm or offer any other options, that would be really appreciated. 如果有人可以确认或提供任何其他选择，那将非常感激。

Thanks 谢谢

The date format is the standard yyyy-mm-dd 日期格式是标准yyyy-mm-dd

PHP Version 5.3.2 PHP版本5.3.2

2 个解决方案

AFAIK, you are limited to these two solutions. AFAIK，您仅限于这两种解决方案。

You should update to 64-bit system if you can afford it, and if it solves a problem then that's better. 如果你能负担得起，你应该更新到64位系统，如果它解决了问题，那就更好了。

Edit: Just had to check: http://php.net/manual/en/function.runkit-function-redefine.php You could probably try and redefine strtotime() to work with dates prior to 1901. 编辑：只需要检查： http ： //php.net/manual/en/function.runkit-function-redefine.php您可以尝试重新定义strtotime()以使用1901年之前的日期。

You can use gregoriantojd, which has a date range of 4714 BC to 9999 AD A much wider range than 1900(1970)-2038. 您可以使用gregoriantojd，其日期范围为公元前4714年至公元9999年范围远大于1900（1970）-2038。 If you are trying to calculate date differences, they are close enough. 如果您正在尝试计算日期差异，那么它们就足够接近了。 Well, except for the "lost" 10 days October 4-14, 1582. And because of different leap year calculation, you will be off by a day every 100 years. 好吧，除了1582年10月4日至14日的“失去的”10天。由于不同的闰年计算，你将每100年休息一天。