laravel 如何比较两个碳时间戳？

How to compare two Carbon Timestamps?

提问by Hassan Saqib

I have two timestamps, edited_at which I created and created_at (Laravel's)... In database, both have type timestamp and default value 0000-00-00 00:00:00... But

我有两个时间戳，我创建的edited_at和created_at（Laravel的）......在数据库中，两者都有类型时间戳和默认值0000-00-00 00:00:00......但是

var_dump(edited_at variable)is giving string. While var_dump(created_at variable)is object/Carbon. What is wrong with these timestamps?

var_dump(edited_at variable)正在给字符串。虽然var_dump(created_at variable)是物体/碳。这些时间戳有什么问题？

I have to compare both after converting into integer using format('U'). I can only call this method on Carbon Object. How can I do that?

在使用 format('U') 转换为整数后，我必须比较两者。我只能在 Carbon Object 上调用这个方法。我怎样才能做到这一点？

回答by lukasgeiter

First, Eloquent automatically converts it's timestamps (created_at, updated_at) into carbon objects. You could just use updated_atto get that nice feature, or specify edited_atin your model in the $datesproperty:

首先，Eloquent 会自动将它的时间戳 ( created_at, updated_at) 转换为 carbon 对象。您可以使用updated_at来获得那个不错的功能，或者edited_at在$dates属性中的模型中指定：

protected $dates = ['edited_at'];

---

---

Now back to your actual question. Carbon has a bunch of comparison functions:

现在回到你的实际问题。Carbon 有一堆比较函数：

• eq()equals
• ne()not equals
• gt()greater than
• gte()greater than or equals
• lt()less than
• lte()less than or equals

• eq()等于
• ne()不等于
• gt()比...更棒
• gte()大于或等于
• lt()少于
• lte()小于或等于

Usage:

用法：

if($model->edited_at->gt($model->created_at)){
    // edited at is newer than created at
}

回答by Yevgeniy Afanasyev

Carbon has a bunch of comparison functions with mnemonic names:

Carbon 有一堆带有助记符名称的比较函数：

• equalTo()
• notEqualTo()
• greaterThan()
• greaterThanOrEqualTo()
• lessThan()
• lessThanOrEqualTo()

• 等于（）
• 不等于（）
• 比...更棒（）
• 大于或等于()
• 少于（）
• 小于或等于()

Usage:

用法：

 if($model->edited_at->greaterThan($model->created_at)){
     // edited at is newer than created at
 }

Valid for nesbot/carbon 1.36.2

适用于 nesbot/carbon 1.36.2

if you are not sure what Carbon version you are on, run this

如果您不确定自己使用的是哪个 Carbon 版本，请运行此命令

$composer show "nesbot/carbon"

documentation: https://carbon.nesbot.com/docs/#api-comparison

文档：https: //carbon.nesbot.com/docs/#api-comparison

回答by ginna

First, convert the timestamp using the built-in eloquent functionality, as described in this answer.

首先，使用内置的 eloquent 功能转换时间戳，如本答案所述。

Then you can just use Carbon's min()or max()function for comparison. For example:

然后你可以只使用 Carbon 的min()或max()函数进行比较。例如：

$dt1 = Carbon::create(2012, 1, 1, 0, 0, 0); $dt2 = Carbon::create(2014, 1, 30, 0, 0, 0); echo $dt1->min($dt2);

$dt1 = Carbon::create(2012, 1, 1, 0, 0, 0); $dt2 = Carbon::create(2014, 1, 30, 0, 0, 0); echo $dt1->min($dt2);

This will echothe lesser of the two dates, which in this case is $dt1.

这将echo是两个日期中的较小者，在本例中为$dt1。

See http://carbon.nesbot.com/docs/

见http://carbon.nesbot.com/docs/