将当前服务器时间转换为ISO 8601

Question

I must convert the server current time to this format:

2016-03-23T05:24:25.590000

I think this is an ISO 8601 (even if I don't understand what are the final numbers, supposedly microseconds).

How can I do? Any help is welcome

Answer 1

The final numbers are the microseconds. It is easy to output a given DateTime object $d in this format:

echo $d->format('Y-m-d\TH:i:s.u');

It is not so easy, to get the current timestamp including microseconds, because constructing it with now only gets whole seconds. You could go this way and append the microseconds manually:

echo date('Y-m-d\TH:i:s') . substr((string) microtime(), 1, 7);
// 2016-03-23T14:55:25.535678

See doc for microtime() and DateTime .