php facebook创建日期中使用的时间格式是什么？
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What is the time format used in facebook created date?
提问by Genius in trouble
Hi i am working on facebook Graph API where i need all the posts information of a group. So I did it and saw [created_date'] => '2013-01-25T00:11:02+0000'what does this date and time represent i mean i know 2013-01-25is date and 00:11:02is time but what does Tand +0000represent.
嗨，我正在开发 facebook Graph API，我需要一个群组的所有帖子信息。所以，我做到了，只见[created_date'] => '2013-01-25T00:11:02+0000'这是什么日期和时间，代表我的意思是，我知道 2013-01-25是日期00:11:02是时间，但什么T和+0000代表。
BTW where is the server of facebook. Which timestamp should i use to match facebook time?
顺便说一句，facebook的服务器在哪里。我应该使用哪个时间戳来匹配 Facebook 时间？
Thank you.
谢谢你。
回答by BBagi
T = TIME and the +0000 is timezone offset. Facebook uses localized timezones. You can request a Unix timestamp instead of the string by adding the parameter: date_format=U to your graph API call.
T = TIME，+0000 是时区偏移量。Facebook 使用本地化时区。您可以通过在图形 API 调用中添加参数 date_format=U 来请求 Unix 时间戳而不是字符串。
Please see this linkfor more information.
请参阅此链接了解更多信息。
回答by Ja?ck
The date format is called ISO 8601. The letter Tis used to separate date and time unambiguously and +0000is used to signify the timezone offset, in this case GMT or UTC.
日期格式称为ISO 8601. 该字母T用于明确分隔日期和时间，+0000并用于表示时区偏移量，在本例中为 GMT 或 UTC。
That said, you generally don't need to worry so much about the actual contents; rather you should know how to work with them. To use such a date, you can use strtotime()to convert it into a time-stamp:
也就是说，您通常不需要担心实际内容。相反，您应该知道如何与他们合作。要使用这样的日期，您可以使用strtotime()将其转换为时间戳：
$ts = strtotime('2013-01-25T00:11:02+0000');
To convert the time-stamp back into a string representation, you can simply use gmdate()with the predefined date constant DATE_ISO8601:
要将时间戳转换回字符串表示形式，您可以简单地使用gmdate()预定义的日期常量DATE_ISO8601：
echo gmdate(DATE_ISO8601, $ts);
Alternatively, using DateTime:
或者，使用DateTime：
// import date
$d = DateTime::createFromFormat(DateTime::ISO8601, '2013-01-25T00:11:02+0000');
// export date
echo $dd->format(DateTime::ISO8601), PHP_EOL;
回答by lc.
This is a standard format, specifically ISO 8601.
这是一种标准格式，特别是ISO 8601。
As much as I don't like linking to it, http://www.w3schools.com/schema/schema_dtypes_date.aspdoes have a good "human-understandable" explanation:
尽管我不喜欢链接到它，但http://www.w3schools.com/schema/schema_dtypes_date.asp确实有一个很好的“人类可以理解的”解释：
The dateTime is specified in the following form "YYYY-MM-DDThh:mm:ss" where:
YYYY indicates the year MM indicates the month DD indicates the day T indicates the start of the required time section hh indicates the hour mm indicates the minute ss indicates the secondTo specify a time zone, you can either enter a dateTime in UTC time by adding a "Z" behind the time - like this:
2002-05-30T09:30:10Zor you can specify an offset from the UTC time by adding a positive or negative time behind the time - like this:
2002-05-30T09:30:10-06:00or
2002-05-30T09:30:10+06:00
日期时间以以下形式指定“YYYY-MM-DDThh:mm:ss”，其中：
YYYY indicates the year MM indicates the month DD indicates the day T indicates the start of the required time section hh indicates the hour mm indicates the minute ss indicates the second要指定时区，您可以通过在时间后面添加“Z”来输入 UTC 时间的日期时间 - 如下所示：
2002-05-30T09:30:10Z或者您可以通过在时间后面添加正时间或负时间来指定与 UTC 时间的偏移量 - 如下所示：
2002-05-30T09:30:10-06:00或者
2002-05-30T09:30:10+06:00
Therefore, in your case the +0000indicates a time offset of 0 from UTC.
因此，在您的情况下，+0000指示与 UTC 的时间偏移量为 0。
