laravel 使用Carbon在laravel中将日期转换为毫秒
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Convert date to milliseconds in laravel using Carbon
提问by Farzaneh
i make a date in laravel with carbon
我用碳在laravel中约会
$date = Carbon::createFromDate(2018,02,16);
how should i change it to milliseconds?
我应该如何将其更改为毫秒？
something like this:
像这样：
18:16:30 -> 1532785457060
回答by Al-Mamun Sarkar
Just use timestamp property of Carbon object to get a time in milliseconds.
只需使用 Carbon 对象的时间戳属性来获取以毫秒为单位的时间。
$date->timestamp
Example:
例子：
Carbon\Carbon::now()->timestamp
回答by Takamura
>>> $now = now();
=> Illuminate\Support\Carbon @1571283623 {#2987
date: 2019-10-17 03:40:23.530274 UTC (+00:00),
}
>>> $now->timestamp
=> 1571283623
>>> $x = $now->timestamp . $now->milli
=> "1571283623530"
>>> \Carbon\Carbon::createFromTimestampMs($x)->toDateTimeString()
=> "2019-10-17 03:40:23"
>>> >>> \Carbon\Carbon::createFromTimestampMs($x)->format('Y-m-d H:i:s.u')
=> "2019-10-17 03:40:23.530000"
回答by Sjors Ottjes
Takamura's answer is very close to being correct, but it contains a bug: you have to left pad the number with zeroes or you'll get the wrong answer if the current milliseconds are less than 100.
Takamura 的答案非常接近正确，但它包含一个错误：您必须用零填充数字，否则如果当前毫秒小于 100，您将得到错误的答案。
This example will give you the current time, in milliseconds:
此示例将为您提供当前时间，以毫秒为单位：
$carbon = now();
$nowInMilliseconds = (int) ($now->timestamp . str_pad($now->milli, 3, '0', STR_PAD_LEFT));
To explain why you have to left pad the milliseconds a little bit more:
要解释为什么你必须多留几毫秒：
$seconds = 5;
$milliseconds = 75; // milliseconds are always between 0 and 999
// wrong answer: 575
$totalInMs = $seconds . $milliseconds;
// correct answer: 5075
$totalInMs = $now->timestamp . str_pad($now->milli, 3, '0', STR_PAD_LEFT);
