php 如何在PHP中以毫秒为单位获取当前时间？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/4184769/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to get current time in ms in PHP?
提问by ollydbg
What I want to get is the very like time(),but should be accurate in ms:
我想要得到的是非常像time()，但应该在毫秒中准确：
2010-11-15 21:21:00:987
Is that possible in PHP?
这在 PHP 中可能吗？
回答by WolfRevoKcats
function udate($format, $utimestamp = null) {
if (is_null($utimestamp))
$utimestamp = microtime(true);
$timestamp = floor($utimestamp);
$milliseconds = round(($utimestamp - $timestamp) * 1000000);
return date(preg_replace('`(?<!\\)u`', $milliseconds, $format), $timestamp);
}
echo udate('Y-m-d H:i:s:u'); // 2010-11-15 21:21:00:987
回答by ThiefMaster
Use microtimeand convert it to milliseconds:
使用microtime中，并将其转换为毫秒：
$millitime = round(microtime(true) * 1000);
回答by Spudley
Use the microtime()function.
使用该microtime()功能。
See the manual page here: http://php.net/manual/en/function.microtime.php
请参阅此处的手册页：http: //php.net/manual/en/function.microtime.php
[EDIT] To get the output in year/month/day/hour/minutes/seconds/ms as requested:
[编辑] 要按要求以年/月/日/小时/分钟/秒/毫秒为单位获取输出：
Try something like this:
尝试这样的事情：
list($usec, $sec) = explode(" ", microtime());
$output = date('Y/m/d H:i:s',$sec). " /" . $usec;
Again, see the manual page for more details on how microtime()works.
同样，请参阅手册页以了解有关如何microtime()工作的更多详细信息。
回答by Thinh Phan
This is my way
这是我的方式
list($usec, $sec) = explode(" ", microtime());
$time = date("Y-m-d H:i:s:",$sec).intval(round($usec*1000));
echo $time;
回答by RedHotPawn.com
Since PHP 7.3 hrtimehas been available.
自 PHP 7.3hrtime可用以来。
This means you can use high resolution timers in nanoseconds without any of the issues of microtime. (e.g. System clock changing between tests)
这意味着您可以在纳秒内使用高分辨率计时器，而不会出现任何微时间问题。（例如系统时钟在测试之间变化）
So, you can now get ms reliably on 64bit platforms with :
因此，您现在可以通过以下方式在 64 位平台上可靠地获得 ms：
intval( hrtime(true) / 1000000 ); //Convert nanosecond to ms
Format as described in earlier answers.
格式如先前答案中所述。
回答by nnevala
Take a look at php's microtime function.
看看php的microtime函数。
