php 将人性化的日期转换为毫秒
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Converting human-friendly date to milliseconds
提问by stunnaman
How to convert human-friendly date to milliseconds since the unix epoch?
自 Unix 纪元以来，如何将人类友好的日期转换为毫秒？
回答by chaos
strtotime($human_readable_date) * 1000
回答by drAlberT
Pay attention: strtotime() * 1000 is ok to have seconds expressed as milliseconds!
注意： strtotime() * 1000 可以将秒表示为毫秒！
The right answer is that it is not possible to have a millisecond precision on date/time functions in PHP. The precision of Unix Epoc based functions is only of 1k milliseconds, aka second :)
正确的答案是 PHP 中的日期/时间函数不可能有毫秒精度。基于 Unix Epoc 的函数的精度仅为 1k 毫秒，也就是秒 :)
Using the suggested answers you don't have milliseconds, but seconds expressed as number of milliseconds.
使用建议的答案，您没有毫秒，而是以毫秒数表示的秒数。
If you are aware of this, and you don't really need a millisecond precision then the answers given are ok, but the question was wrong :)
如果您知道这一点，并且您真的不需要毫秒精度，那么给出的答案是可以的，但问题是错误的:)
回答by Dominic Rodger
You're looking for strtotime.
您正在寻找strtotime.
Sample Usage:
示例用法：
$myvar = strtotime("7 October 2009");
That gives you seconds since the Unix epoch, so you want:
自 Unix 时代以来，这为您提供了几秒钟的时间，因此您需要：
$myvar = strtotime("7 October 2009") * 1000;
Watch out for the fact that strtotime"guesses" what you mean (how should it interpret "12-08-2009"? probably as 8th December, but it might equally validly - and being a Brit, thoroughly sensibly - guess 12th August). If you know the format in advance, use strptime.
注意strtotime“猜测”你的意思的事实（它应该如何解释“12-08-2009”？可能是 12 月 8 日，但它可能同样有效 - 作为一个英国人，完全明智地 - 猜测 8 月 12 日）。如果您事先知道格式，请使用strptime.
